Engine build up options

ya i'd like to keep it fitting good and i wont have any exhaust (header) problems right no clearence issues? well a 4.00 crank is possible i dont think i wanna go the edelbrock head route. i was thinking 2.02 1.60 valves. bigger cam(i have no idea here) port and polish heads, fix up the block(bore it) ballance the crank, new bearings and such. a edelbrock intake(unsure which) edelbrock carb like 700cfm???

can somone explain cam talk to me? i am pretty rough in that area.