Getting the most power out of my 400 stage 6 heads

Flow numbers for these heads with 2" exhaust pipe lift range .100-.600
.100 .200 .300 .400
67/56 142/107 204/156 253/198
.500 .600
287/233 307/257.

I for some reason was thinking I'd need a lot or lift and this and that, though more lift would mean more flow, but is it safe to say with a .500-.520 lift and flow in the .290 range it would feed that 400 just fine, probably more flow than the engine could use, at least until wide open throttle but like I said this is going to see the drag strip every other weekend or so, I'm probably the first person to put stage 6 ported heads on a stock stoke low Deck, but what the heck? Now from what I've saw with my research is it's easy to overcam a 400 on duration, and around .240-.250 range is the most you want, more than that and you actually lose horsepower now I think that's referring to stock head, and more street driven cars, but the principle is still the same right?? I'm thinking something in the .240-.248 range, and a 110lsa? Another thing I forgot to ask about is not losing too much cylinder pressure/compression, some say a wider lsa keeps you from losing as much pressure, but the whiplash cams that are supposed to be for low compression engines and make more compression have 107lsa, which the comp thumper cams have a grind that is almost identical to the whiplash but if one wants to run nitrous doesn't he want a wide lsa? At least that's what a buddy that's building a turbo/nitrous ls camaro was telling me earlier, but I'm only wanting to run a 100 shot if I need it... I'm expecting I should run 11s as with a big block a body with high flowing heads it shouldn't be too much to ask, but I would like to dip into a 10, and I've got 2 sets of solenoids, 2 bottles, lines, jets, fogger nozzles and a plate, but I'm wanting to remain sleeper mode so if I do run spray I'll probably plumb one of the fogger nozzles into the bottom of the intake with a small 100 shot, which once I build the stroker and have all forged, h beams, girdle, and cross bolt caps that'll probably be 2 stages, a small shot on launch, and a big shot on the second... And yea I already know I'll be able to pick any right can I want with that because I'll have those luxury of valve reliefs and it'll probably be a roller... Which I originally planned on dropping my 440 in the dart but when I picked up this 400, I figured I'd stroke the 400 in the future being its the stronger/lighter block, and a good candidate for it. so I'm keeping the 440 fresh, and once it's finished I'll sell it and buy the bottom end for my 400 block...