355 gears. Or more ?

Hello all.
I just ordered 355 gears for my 489 case sg. Car ( 69 Dart) will have a 440 , fat isky cam , alum heads, 10-1 comp. 727 trans , 2600 stall. My question is will that be enough gear for a street toy ? Or will it be dead off the red lights ? what 15" tire Can I find at 26 or 27" ? The 235s I see are around 28" tall and that may be working against me. Any input would be helpful.
Thanks