The more power you make, more effort and parts are needed to accommodate. 720whp will be easy for you to optimize given your extensive racing experience. I think the biggest thing that is a roadblock for many is support. No drag racing pals to bounce ideas off of, or crappy prep at the strip...
Most do not optimize thier setup, therefore requiring more power than needed to run a certain number. This mode of operation also produces a false assumption of what a specific combo should run. Example, I've been 9.01 at 150 with a p1sc. Most combos running that are much more powerful.
The transbrake simply introduces reverse when engaged. You can use the transbrake at any rpm you like, 1000rpm or 15000 rpm. The 2 step uses ignition cut to maintain your specified rpm while on the transbrake.
LOL, when I saw it I immediately thought the plenum was much larger. I watched the vid earlier and thought he addressed plenum volume. I rewatched and he did not.... As an owner of the original CJ, the new one looks taller.