Your build is not cheesy. Like, at all. Don't take this wrong, but you don't understand what cheesy truly is. Once you discover for yourself what cheese REALLY smells like, then you'll be able to use the word. And you'll probably be a better character builder.
Anyway, my suggestion is that for one side of the gestalt you take Swift Hunter, and on the other side you take barbarian (with the pounce ACF from Complete Champion, see if you can get it approved), fighter, assassin/whatever. You'll be able to TWF a lot, lot better. Take Improved Skirmish for +2d6/2AC on a charge attack, so basically your attacks do 7d6+weapon damage, plus you can sneak attack if you win initiative. What you are now is basically an assasin-type: you surprise your foe and hopefully kill them in a single round. Don't forget, you get death attack if you can study them from far away, then charge up and sneak attack.