need 340 help

i have a 69 340 im about to put in my 69 dart and need a little advice, right now its got 10.5 compression pistons, a mopar 509 cam, and a worked set of factory closed chamber heads (2.02/1.60 3 angle valve job) What would be a good intake and carb setup? also should i run the 509 cam for now or is it worth going bigger? and what about a good set of headers? any and all help is greatly appreciated! THANKS! -Mopow3r