Pot = 780, you have 1500 - 260 = 1240 left.

I bet 420 or so.

Hand 2 :

Pot = 2150, you have 2520 - 900 = 1620. There's a possible flush draw. I would bet at least 1000k or go all-in.

In both case, if raised, you go all-in or calla n all-in.