You should have a kin. The -rech penalty is a pain.
I have a pimped out SS/STONE and I went for speed and recharge.
Electric isn't a very hard hitter so I'm not sure it'd be ideal as a farming toon. If I farm, I do it with my ice/kin or any one of several /shield brutes. You could farm with an SO'd out /WP, /INV or /STONE to save up some money.
If you still would like to pimp out your stone go for speed and recharge. There are lots of places for the lotg 7.5% unique and that's where the majority of the money is spent.
Good luck.
I have a lvl 50 brute that I want to use to farm for influence and prestiege, but I can't get a good enough build on my own to be really effective at it. I was wondering if someone could help me out. I've got 30 million inf saved up but i know its not going to be enough. I am currently using SO's but will want IO's.