hi nice amp choice, I'm gonna get this amp as well as a recording and live amp. They're amazing value, but I wouldnt go for the combo, go for the head, it's more versitile and quiter I've heard. As for mods, I recon the valve head stock sound will be OK. The only mod I'd get done is a change to JJ tesla tubes, it will be worth it! I plan to do this on mine once i get it ; )