NL600 Maniac bluffer shows... how to handle him in the future?

[gradx]

3/6 NL (Bodog hand history so it sux)

Villian has about 550
I have him covered with about 700.

I've played with this guy before and he usually comes in short (about 250-300ish).

He limps from MP I raise from the BB with AA to 24 he calls.
Flop comes 962 two suited. I bet the pot for 50 he calls.
Turn comes 9 I bet 75 he calls (friend says I should have checked here).
River comes J for 3 flush I bet 100 he pushes for 450.

I fold instantly and he shows KQ no draw. How should I handle this maniac in the future?