I used the manual and the power commander youtube video as guides
when I took off my tank.

On my classic Valkyrie, to get under the airbox, I would remove the seats
and tank. The airboxes are similar to each other. If I needed to get to
wiring at the same time I'd uncover the battery and remove the side
panels. The radiator wouldn't be in the way on the classic valkyrie,
but other than that it is not that much different.
I had to stumble around with those new push-pin plastic-cover
fasteners but new stuff always involves some kind of learning
curve...
The new Valkyrie doesn't seem too hard to work on, but I'd rather
change the throttle cable on an old Valkyrie than a new one.
-Mike