[BigJock]

I don't forsee any major problems,so long as you measure your wheel backspacing carefully before ordering your wheels.
Most wheel vendors have on-line guides about how to do this properly.

I'm pretty sure 8" wheels are pretty much standard fare on MII type IFS set-ups.

Are your spindles stock height or lowered?
AFAIK 17" diameter wheels are the minimum for lowered spindles or else you get lower ball joint clearance issues.
(Don't ask how I know)

Nice installation BTW. I've never seen those style of shockwaves before.