$5.50 KK facing reraise and flat caller

[Yorkshire Pud]

Yeah I figured there was no AA in there and pinned one on at least AQ and the other maybe a mid to mid-high PP.

What's my line if I raise to 600 and 1 or more villains come over the top? Do I shove with it being a $5.50?

In the actual hand I played it awful and pushed preflop and was called by the re-raiser holding AQ.