No worries, this will represent just one of the growing pains you'll have while owning this complex amp. It is even more interesting when you absolutely know, inside and out, how your amp operates and play a show where you are rushed on stage - for whatever the reason. As you are frantically getting your gear ready because of the promoter's f-up (or another band's tardiness), looking at the sea of (what was once) familiar input jacks and buttons, will soon appear to be an ocean without landmarks -- dim lit stages just help magnify the slight confusion that ensues. Perhaps you hook a wrong cable up, or you meant to flip an individual power setting but instead flipped the effects loop off. It's the price you pay for good tone and lots of options.
Hopefully you can figure everything out in the knick of time before the soundman calls on you for your individual soundcheck. There is nothing more embarrassing than not being able to figure out your own amp. Most people are like, what the f, it's just an amp! Then they see the Roadster and go, "what the ... !" I let a different band borrow my head once for a gig where they were on the same bill. In return, I used his cab. I tried to give the guy a quick tutorial on the amp, but he blew off my help, in favor of past knowledge. As you can imagine, he was pretty intimidated as soon as he pulled out the footswitch. The only thing he said was, "it has FOUR channels?!"
It's also fun to get the soundman's reaction when he says, "can i hear your clean channel." After some playing and level eq'ing on his/her part, you move on to your rhythm and lead channels. Then he says, "anything else?"
My response was typically, "Yes, I also have a crunchy tweed channel, and an effects loop engaged for two of my channels. I need to know if my effects level settings are coming through at a comparable volume."
Enjoy you Roadster.