I’d vote @RB3offroad who is a forum vendor and everyone has seemed to like everything they’ve bought from them.
We’ve seen a few peeps lose wheels…make sure you check spacers every so often. I’d even consider a little blue loctite when you mount the spacers and paint pen mark the fasteners to make future verifications they aren’t getting lose easier.
Width…if you are switching wheels to same size and offset all around then I think 1” wider on the rear evens up the track. If staying factory it’s whatever you want. Keep in mind the more you push the wheels out the more mud gets past the fenders and more stress you put on suspension components.