A different Q on 340 Vs 416

I'd start wit a survey of piston weight given the cr you want and the head cc's
Then figure the max FPS you want those pistons to move- ask the piston mfg
what max rpm do you want to turn with each
what valve springs would it take- you evidently do not want to go to high maintenance grind-
keeping same cam- when does it quit pulling/ max rpm
then work backward
would be really fun with the stroker and the 3:91's but maintenance may not be so much fun and wopuld take a much bigger cam if going for max- not so for a sat night machine

I like the cu inches- but you say you already have good cranks so you can't hide the stroker kit in a new crank-- what's the delta in cost?
the blower can add 200 hp without too much boost