Any quality bearing grease, synthetic or dino will work fine, I wouldn't let synthetic or high priced grease extend service intervals in any case.
On adjusting the brakes, I keep the wheel off the ground, tighten until wheel won't move, then back off until wheel spins without drag. I've never counted.
Bob & Donna
'98 Gulf Stream Sun Voyager DP being pushed by a '00 Beetle TDI