$3/$5 NLHE $300 buy-in

Goodish but looseish reg (nearly $1k) limps
Total donator ($200) cracks a kidding around smile and raises to $15
Semi-loose/passive ($300) calls
Loose, aggressive with small money, passive with big money ($500) calls.
SB is a loose/passive donator ($500)
BB is tight/passive
You are the probably the tightest player at the table.

You have around $400, and the button.

What's your play?