It honestly depends on what you mean by maniac. Against some villians, like those that will bet/cap any street with one pair type hands, I think it is ok, though the ace on the river does scare me. Against a very loose aggressive that slow down when faced with aggression unless he has a stronger hand, I likely slow down, and just call the river.

EDIT: Wanted to clarify a little more. I have like 10,000 players in my PT datablase over like 65K hands. I have run into maybe 10 opponents where I am willing to put this many bets in with your hand. Your hand is not THAT strong.