22 mm for the axle, 6mm for the axle clamp bolts and brake caliper bolts.
Axle clamp bolts are 25Nm, brake caliper bolts are 34nm and the axle is 110Nm.
Don't need to remove the fender. Even if it's tight, I've never seen a bike & stand combo that had to have the fender removed.
Remember to center the forks before you tighten the axle clamp bolts, i.e. "bounce" the front a few times.
I wrote a how to a year ago, it's in the how to section (duh).