mech Roller vs Mech flat tappet cam Q

Road Racer --RPM is 2500 to 6200RPM Want as close to 600HP as I can get--60MPH to 150MPH for 20 sometimes 30 minutes depending on the track
I drive it around country roads on occasion
2900lbs
3.23 gear

496 CI stroker
440 source heads 72 cc's I am around 10.75 to 1 CR
Flat top pistons w reliefs
dual plane Hi rise manifold
850 Demon
headers dual exhaust
MSD ignition
8 quart
Accumulator

The cam and valve train has to hold up to typical 20 minute sessions every 2 hours twice a month


Thank you
(i get alot of neg comments cuz its a BB but thats what it is and if you guy's drove it I dont think you would say that BB SUCKS and rather be a Craft SHow??) could be wrong