21% VP$IP is what I have been running and it has been pretty profitable. I think 20% might very well be optimal. I don't mind the current VP$IP. I do think you complete the SB too much. Watch what you are completing the SB with (and what you call a raise in the SB with). PFR% should come up a little bit. I think the rule of thumb is to try to raise at least half the hands you play PF. I am right at that number. (21.3/10.5 over the last 15K hands. 10 BB/100 winrate 53% Win at showdown). W$SD is a little low, so you probably are calling down with weak hands a little too much. I think you can nudge this up a little. Aim for 50%.

FWIW--my aggresion factor including PF is 1.4. Postflop it's closer to 2.7.

GL