Allin every time right?

[Haiku]

Definitely shove preflop; flat calling here (we know we're not folding this after the flop) is a huge mistake. When your opponents put money in the pot preflop, they're doing so with a big equity disadvantage. If you flat call and force them to put in a good portion of their stack post-flop, not only do you potentially allow them to get away from the hand, but more importantly it could be you putting in money with a marked equity disadvantage.