I just think that if the money goes in on the flop I'm ahead of too strong of a range and the mistake of often getting in with ~6% equity is a large cost to make up out of the rest of his range. Do I have to get AI?

Villain is 25/22/aggro. Don't have my database open at the moment so I've no other info. There was nothing special anyway.

$2/$4 No Limit Holdem
5 players
Converted at weaktight.com

Stacks:
UTG ($703.66)
CO ($414.20)
BTN ($482.10)
Hero ($401.40)

Pre-flop: ($6, 5 players) Hero is SB
3 folds, Hero raises to $12, BTN calls $8

Flop: ($24, 2 players)
Hero bets $18, BTN raises to $56,