routine situation checkup

[mterry]

I want to double check my thought process for a relatively routine situation.

5/10 party

A5o in the cutoff, 64/14/0.65 over 66 hands open limps mp2.

I raise to steal button and blinds.

Pokerstove says my equity edge is slightly better than break even against villain's range.

Two questions:
1) How confident are we in a super-high VPIP over 66 hands?
2) Which image/table factors should I also be considering in this typical 5/10 party game before I auto-raise?