I'm contemplating doing the same thing. How long did it take and what tips can you share.
I did 5 in one afternoon, they were already stripped, I purchased the 24 bolt wheels from TrailworthyFab along with the bead locks, they did not come with the correct nuts or 0-rings, so make sure you have some correct o-rings from a reputable dealer (AMG). Make sure everything is clean.
Get some Murphy's soap, (or other vegetable based tire lube) never use a petroleum product (grease) or solvent (WD-40) on tires as over time it breaks down the rubber.
Tighten the nuts in a crisscross pattern a little at a time and pay attention so the wheel goes together evenly, I used all new grade 8 lock nuts, I actually used grade 8 standard nuts to assemble them then switched to lock nuts.
I have only done a dozen or so wheels, I have never used a sealer (silicone) and but for the one time I tried to use crappy o-rings (fleabay) I have never had a problem. And of course torque them to specs, 85 ft-lb then 125 ft-lb
Edit, oh yes I built them on top of an empty 5 gal. bucket, not the best solution but what I could find.