Converting from 318 to 360

Hi your knowledge and info is greatly appreciated. Im currently working on my 1967 Plymouth Barracuda Fastback. It currently has a 318 with a 904 transmission and a ford nine inch rear end. I purchased a 360 long block. What problems will I be facing. I know the 360 block needs to be externally balanced. I seen serveral ways of achieving this. Either by balancing the torque converter or buy purchaseing the B&M Flex Plate. I'm leaning toward the Flex Plate. I wanted to use my current Torque converter. Is this wise? I will be using some of my old part in the cenversion. Can I get away with using my distributor with Electionic ignition system. (From Mopar)? My Edlebrock intake manifold? My Headman Headers? Will my current radiator be able to cool the 360 engine suffuciently? Sorry for all the questions.
:salut:
thanks.