Unless you spent alot of time or gold on that character it might be better to start over. You are already too high of level to get anywhere with the boss events and it would be hard to get into a good syndicate with those stats. If do choose to start over, i think the only to do it now is to contact support. Deleting the game and reinstalling will just bring your old character back.
My camper that I started 2 months ago is at 25k attack and level 25 no gold spent. It doesnt take long to get good stats playing the events. Either way make sure you read and understand this guide if you havent already.
http://www.funzio.com/forum/showthre...ionaires+guide