Here are a couple of myths I debunked when I was mocking mine up.... And I was doing a 512 RB motor.
Heater motor- It cleared even with a set of cast MT Valvecovers.
Powerbrakes- I have Hrdroboost which is very small and was easily able to remove the Drivers side VC.
I recently sold my setup (mounts, headers, etc.) to a young kid that sounds similar to you. The real headache as I explained it to him is the rear steering setup. It just takes all your good real estate needed. But nothing jumped out as an impossible task. My biggest hurdle was I wanted power steering with full length Chassis headers and I figured it out but at a cost. The only other limitation you will run into is if you want to run a flat hood and a single plane intake.
But your young so go for it. The water's fine so jump in. For those that want to bash your efforts, either they don't realize your the next generation or they have never been around a well seasoned and well tuned BB car. Nothing like it....
JW
