I don't think its terrible to just call but i think i raise mostly because:

1) I want to build the pot.
2) I don't want to give away another card/I don't want to see a heart on the turn, so why let him see it for 2 dollars?
3)I want to know where im at in the hand/what type of hand he may have, by just calling, what do i know?

My plan after that would be to get it all in on the flop, or call his reraise and try to get it all in on the turn.