cam advice for 340 street motor

The short block is together and it has sealed power pistons part number L2316. Just looking on the net the factory U heads should be around 72 cc I'm not sure if my heads have been milled or not I'm gonna take them in to get valve job done and straightened. But if they are around 72 that puts it at 9.5 to 1. I do not have valve springs as i will buy them to match the cam i choose. not sure on rockers from what ive been reading roller would be the way to go.