I would say Brutii are best Romans to start out with, trade temples, easy access and Senate Missions into Greece. Tarentum can be very lucrative. The naval stuff is not a big deal, I use my navies for transport and relieving blockades, I don't actively blockade much. As far as the temples go, just take them from the Scipii, the gold stuff is nice but not necessary. No Scipii temples give trade help. I think ditto for Julii.