17 Str +6 Athletics (Prof + Metal Gloves +STR)
15 DEX +4 Acrobatics (DEX + Background Entertainer)
AFAIK the highest bonus is used, so in your case it's Athletics only. Assuming, of course, that Larian didn't screw up the implementation, and it's actually RAW, otherwise all bets are off.
Depending which Safety Roll will be made, itll be interessting what happeneds when someone shoves. How more or less annyoing it can get.
I take it you haven't met with the "Nere And His Duergars" travelling circus yet. Go on, try your recommendations in a fight against them yourself. Then come back here and teach us how to suck eggs.