I actually think your preflop play was ok. You are against a poster who has already checked from late middle(this means his hand really sux and he is likely to fold if you raise) You are already partially invested since you posted and you only have the button behind you. You are investing just one more small bet with a chance of winning 3.5sb without a contest. And if someone calls you can still win a decent amount of times with just a flop bet, or you may actually hit your hand. Overall raising this preflop is good aggressive poker in my opinion. I realize the situation didnt turn out well, but so what. This is a +ev raise and thats all that matters.