Pretty late night and table is 3 handed. 3 handed for about 30-45 minutes. 

Stacks are $1200 effective except for btn who has $110

btn limps, I raise to $35 out of SB, BB flats. btn makes it $110 and is all in. i flat. BB makes it $330. i go all in. 870 more to the bb who tank calls. 

I understand that this is a super read dependent situation but I'm curious as to what information others would consider when deciding how to play this hand. Pertinent info for me was that BB was flatting maybe 30% of my SB opens and 3b like maybe 15-20%. Thanks!