Goodwin's avg. will be substantially higher than upton's or young's. Also if you haven't noticed the rays have absolutely no catching so they would probably welcome flores or leon. They did have a combination of jose lobaton and jose molina catching this year.
Flores and Leon are not major league caliber catchers. Frankly, I think Solano has more upside than either of those two.
And I don't think Goodwin will ever be a high average guy. Not with is strikeout rate. But, more importantly, it's way too early to tell. He's a low B prospect at this point.