Some playing with SNGPT suggests to me that pushing about top 33% is right. (33% = 22+,A2+,K6o+,K2s+,QTo+,Q8s+,JTs)

For a +0.5% minimum edge, this means calling ranges of BTN=9% (66+,ATo+,A9s+), SB=11% (44+,A9o+,A8s+,KQs) and BB=15% (33+,A7o+,A4s+,KTs+). If your experience is that the calling ranges will be a bit wider than that, it's right to push less often; if you think they will call less often, it's right to push more often.