Never seen them before? Definitely AA - QQ, AK. Probably JJ, TT, AQ.

It also depends on my position, my stack, and whether anyone else has me covered. If I'm on the button, SB or BB and everyone else has folded, I will include JJ, TT, AQ.

I almost definitely be pushing any hands I play unless there's a possibility I might be playing for really big stacks. In that case I might call and fold to a big push if I have a hand AK, JJ or less. Reads count.