I've got a lot of 5/10 hands in the PTDB. Granted a good portion from the beginning were big losers, but I've proven that I can win at a solid rate since January.
Also, those #s I stated above are a bit low. I claim a 2BB/100 rate. However, to keep that I'd actually only have to win 1.5BB/100 w/ rakeback.
I've taken a few stabs (lost $1200 yesterday

) at 10/20 but w/ not great results. I'm currently 4 tabling 5/10 and mixing in a GREAT 10/20 game when I can.
Breaking myself in.
Also, as a note to everyone:
If I do this, it would probably only be for one year. Coaching is still my heart and soul.