Finally done and back on the road, the ride to work this morning was the first real test. These forks make the old ones seem like a joke, there's noticable less flex and it just eats bumps now.
Not sure that I love the fender but I had it laying around, I may try to knock up a low front guard in the future.
I used the stock BMW wheel with a custom axle and caliper adaptor. Right now it has 0.48 fork springs which seem pretty good though I haven't checked the sag yet. It has 7.5 wt oil set at 90mm.
Next project is to fit the WP rear shock which is on it's way then lace the 21 inch excel I picked up.