So, the gig is set for tomorrow, my mate and I have had quite a few practice sessions, and the last full-band practice session was on Wednesday of this week, personally I think it went really well and I feel pretty confident with the songs, although we did end up having to drop "One of these days" by Pink Floyd from our set list.
My mate did have some trouble with one of his amps in his guitar rig but he took it to a local tech and the tech managed to fix it in time for the gig, hopefully it should go well.