Thief is probably the best non spell using profession. Gymnastic skills are cheap and influence is low average.
Talents can compensate for races with low Ag or Pr mods. My last entertainer was a Halfling. The high Ag mod made him a great tumbler acrobat, juggler and knife thrower. I took a +5 Pr mod to offset the racial penalty and the sparkling eyes talent (+15 all influence checks). I also bought an additional Ag mod. From level one he was an excellent performer, very good with a knife/dagger but certainly not much in melee (at level 12 I got his OB to 85, but his thrown is around 140). I also recall buying thrown dagger as EV then stepping it down to normal progression, allowing specialization in throwing any kind of weapon. Using items from the crowd is part of the show.