I saw that tour in Massachusetts last month, you are going to have a blast. COC were fucking great, I'd forgotten how much I liked them. When they bust into "Vote With A Bullet" it's pretty intense.
Motorhead was incredible. The set list was nearly flawless, lots of stuff off of "Inferno" but in my opinion they played all the best songs on that CD, even "Whorehouse Blues" which is great live. For me, the only thing that would be better than seeing Motorhead and Lemmy in the flesh would be if Johnny Cash rose from the dead and played in my backyard. Tied with Motorhead are the classic Misfits lineup and seeing the Effigies in Chicago in the early '80s when they were still skins.
Bottom line, your socks will be rocked right the fuck off.