I am getting an Acoustic Image Clarus head , and an avatar compact 112. I can get it in 2 , 4 , or 8 ohms & AIs run 300 watts at 2 , 200 at 4 ohms , 100 at 8 ohms. I will be doing mostly small gigs , with upright and electric , with a tech 21 bass DI. Any opinions. I need an ohmage for the cab. it can handle 350 watts. How many watts would i need?