That Johnny Viva really sounds like a nice character.

With these sorts of loose players, their ranges probably includes everything from made flushes to flush draws to sets, 2 pair, and top pair. One concern is that there are two of them, which increases the likelihood that one may have the flush. (On the other hand, if they both have a draw, it decreases the likelihood that either one will hit the flush.)

I assume you therefore want to be thinking about an eventual shove, and you need to bet enough to give either Villain an incorrect price on a flush draw.