Micro terror stack mt20 & ppc108

Would this head/cabinet be enough volume for a vocal setup using a Sennheiser wireless mic, effects box at small venue/clubs and a 3 man army?

What is tbe e,act cable i would nedd to connect to speaker im new to stacks?

Does this set come with a small speaker cable?

Can you double stack this (1 micro terror and two cabs)?