Interesting feats:
Superior Unarmed Strike: This also increase your damage as if you were a monk 3 levels higher.
Improved Trip: Nice to do with those extra attacks of Opportunity when you have 10 ft reaches.
Armored Monk: If you want an excuse to pick up some decent light armor. You only get 1/2 your DEX bonus but who cares about that DEX if you are running Fist of the Forest for that CON bonus as well. (NOTE-Starting off by taking a level 1 Dip into Fighter gives you the armor proficiency required for this as well as gives you the bonus feat to apply towards Fist of the Forest Requirements. 2 Birds with 1 stone sort of thing.)