AF is a lil too high, you're probably blowing ppl off hands too much, 3bet is a little high for 2nl/5nl. I'm at 10nl and I'm STILL only 3betting my nut hands unless I have an "aware" opponent (running stats like yoursish) then I'll do it with Axs and stuff but theres really no reason to 3bet 7% at less than 25nl. Also, Fold to 3bet could be higher.