Barbarian - Go WW
Weapons - 900+ DPS Mainhand with atleast 60% Crit hit dmg and a socket... Offhand, 750+ DPS w/ 60%+ Crit hit dmg, 3% Lifesteal, and socket
Amulet/Rings - Attackspeed + Crit chance first, then crit hit dmg - str if you can get it
Boots - Firewalkers (very, very cheap)
Bracers - Lacuni Prowlers - (Crit chance starts making them uber expensive)
Figure out the rest
Most important stats
6% Lifesteal (If you don't have high enough DPS, you'll e stacking that to 9% with a passive skill)
500 Resistance (Minimum)
Roughly 30k health
45%~ Crit hit chance
30%+/- Attack speed
2k+ Strength
24% Movement Speed
As much crit hit dmg as you can get
As much gold find as you can (for GPH)
These stats will be efficient in MP0 (deaths here and there [shitty combos]) and the potential for MP1. If you're running A3 (as most people will), run MP0.
I usually get these stats for roughly 10mil gold or less (my last 2 bots I got these stats for around 5mil!). Be patient and start hunting for the items while your bots are leveling.