Hmm, not too sure about the amps. He probably uses a few judging by the amp switchers/ footswitches on his board for clean/ crunch or whatever. You can buy a nice clean amp that you like and add pedals to simulate the amps. I'm not that familiar with his sound tho, I just like his gear heh.
His board might be huge but its actually not that complicated if you take away all the buffers, line/ amp switchers/ pedal powers/ footswitches. After taking a closer look at his board it seems that most of his stuff can be bought for $200 or less 2nd hand. You could swap the fulldrive for a tubescreamer, the DL-4 for a nova repeater/ dd-20, zvex super duper for a vexter sho? and a vox wah would cost below $100.
I don't really know cheaper alternatives for the micro POG, OCD, octafuzz and boss volume pedal haha.