I'm all in

Lots of dead money floating about, villain has less than a full stack and that squeeze is too small to get me to do anything except push my stack in the middle.
I'd be confident that calling would be a worse option, particularly with two shorter stacks swimming around in the pond and we may get MP to fold out a better hand as we look so strong when we push, so ye, I'm all in to.
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Id like a nice 4bet more than a push because this gives you waaaay cheaper 4bet bluffs. As villan only has

Pretty trivial fourbet spot for me. I don't think it makes tons of difference on our sizing, if we get any action it will almost certainly be all in pre/committed to getting all in on any flop anyway as the two smaller stacks are incredibly unlikely to flat call a fourbet and UTG+1 will be folding very frequently regardless.