You have a lot of potential, so i will break my silence this one time. Forget about hunting for bunhae (a term I have never heard a korean born practitioner use, ever) in the kukkiwon poomsae for the moment. Instead, I would focus your time and energy for the next three years on learning and understanding kukki taekwondo from the perspective of the pioneers and what they envisioned for taekwondo. Take off your goju ryu colored glasses and approach it with the proverbial empty cup.
Buy the latest Kukkiwon Textbook and read it cover to cover at least ten times. The first time can be light, but each time after that should be more and more concentrated. Focus on understanding all of the taeguek and yudanja poomsae from the kukkiwon standard. Buy the Kukkiwon DVD set and watch each poomsae at least once every day you train, which should be six days a week. When you watch those videos daily, visualize that you are the performer in the video and follow along as if it were your body that was demonstrating, not someone else. Do five to ten reps each of the taeguek poomsae three times per week and ten reps of all of the yudanja poomsae three times per week. That should take you approximately 60 minutes per day for taeguek and 90 minutes per day for the yudanja poomsae, half that if you only do five reps. It is a minimal investment of time very few out there are doing. Do taeguek 1 jang ten times everyday and focus on making that form perfect. That is the most important form, in my opinion. Do that poorly, and everything that follows will be poor as well.
Learn the modern competition training methods, stance and steps, the importance of a proper roundhouse kick, how to properly hold a paddle, the value of hogu drills, sparring strategy, etc. You really need to focus on this because it is your biggest weakness in kukki taekwondo. It is not enough to know the poomsae. Here is a video that you should purchase and watch at least 100 times (ten bucks):
http://www.turtlepress.com/Taekwondo_Training_in_Korea_DVD_p/188.html
Attend as many instructional seminars as you can. I would also take the Kukkiwon Instructor Course, in Korea if you can, but if not then certainly take the ones to be offered in the US (that may start up again, in the very near future). The next one is in July in Korea. Go to that and go to next two years ones in Korea as well.
If there are any coaching seminars offered by high level coaches in your area, go attend those. make friends with as many kukki taekwondo instructors in your area. terry can and will help you with that. I would also be prepared to attend the USAT Nationals/JOs which are being held in Dallas this year in july. You don't have to bring any competitors, but I would attend, watch, and learn. If you can attend local tournaments, i would go to those as well.
I would also read the posts by jaeimseu very carefully because he lives and trains in korea so you have a direct link to what is being done there. He should be looked upon as one of the best resources for accurate up to date information on kukki taekwondo on here. His posts are clear, concise, no nonsense, and accurate.
After three years, with your background and discipline, you should have a firm grounding in kukki taekwondo. Then you will be ready and deserving of your kukkiwon 4th Dan. You talk about having standards for rank progression, so you should be able to live up to those same standards. You take to heart and do what I suggest above, and you will be head and shoulders above most taekwondoin after those three years.
Let me put it this way. It is like you have two cars in your garage, a 65 mustang, and a 12 lexus. You enjoy both for different reasons. But what you wouldn't do is put mustang parts on the lexus, or vice versa. In fact, you probably wouldn't even compare the two or try to make each into the other. Same thing with your goju ryu and taekwondo. keep them separate and apart. You have a deep love of goju ryu, that is clear. but I am not so sure about taekwondo, mainly because I don't think you really know and understand it. Take the three years and hopefully you will come to the point where it doesn't have to be either or in your mind, that you can have two different perspectives at the same time on two different but related arts. Mine are hapkido and taekwondo. Yours are goju ryu, aikido and kukki taekwondo. I keep my two separate and take polar opposite approaches with each. For taekwondo, I share with the world. For hapkido, it is a treasure that I keep hidden and share will only a few. Perhaps that is what you will do with goju ryu, I don't know. You just got promoted in aikido and goju ryu, so the three years focus on taekwondo shouldn't be an issue.
You have a commercial school now so one suggestion I have is to offer a goju ryu class. those who are interested in that type of training will gravitate to it so you don't have to go through the strokes of trying to put square pegs into round holes with the bunhae thing in your taekwondo program. Most of your taekwondo students are kids anyway, so they wouldn't be good candidates for bunhae instruction anyway.
But the main thing is when learning and training in taekwondo, to think only of taekwondo, and not goju ryu, aikido, texkwondo or whatever else you have floating in your head. Do that, and you can go far. Otherwise you will be constantly sidetracked with goju thoughts, which will only serve to impede your progress and pollute your perspective. Bruce Lee was wrong about one thing, it does matter where it comes from and we shouldn't be doing tai chi in a judo class or karate in a taekwondo class. Instead we should be doing judo in a judo class, tai chi in a tai chi class, karate in a karate class, and taekwondo in a taekwondo class.
If you need to get in touch with me, pm daniel sullivan, djinx or miguksaram. They will know how.