You're crazy your just looking at prices and picking the highest one, a 3.5ghz quad core could never keep up with a 3.1 eight core hyperthreading and all that shit is also terrible on a computer when botting and isn't all that great either.
Also your paying a decent amount of the money just because of the on board gfx with it which you don't need when botting. You picked a good choice for a processor I don't know how many of the other bots it can handle but yours as long as you have enough ram will run at least 12 epicbot bots but I would guess 14-15 This is going from my computer which has just over half the processing power yours will.
And if you want to go bigger I would just buy a kit to make a work station just make sure its properly cooled or you will fry the system fast and possibly start a fire. If you can use a refrigerator they work wonders.