you have the basic bolt ons i would turn my attention to the suspension first. get some +2+1 a arms shocks 2+2 rear axle, and rebuild the rear shock. there is no need for 35mm carbs without some heavy porting and unless you need it dont just go and bore it .40 over. what kind of crank are you wanting??? stroker long rod what?
edit: i see you only pplan to bore it when it blows up my bad:)