Agree to disagree - I don't think many teams have a Rousseau type player. He's a special, special talent.
As for the rest - depends on development. There's talent here, for sure, but they're not first round talent at the moment.
Yep, I'd argue he's a little too small to be a first round TE.
Not to say he won't be a fantastic NFL player, but you're projecting in the Draft. You want those 6'5"+ TEs that are a size mismatch.