Beat!
Smash Master
There's room for weak uairs -> tipper at very high percents, but otherwise they should be tipped. The weak uair -> grab you're doing takes a bit of timing (or good DI) for the spacie to get out of, but it's not as guaranteed as a well timed sh uair -> regrab.
Going for other stuff instead is fine, but not quite as optimal.
Yeah, the timing for this is pretty tight, and on top of that you may need to adjust your spacing after the uair.At higher %s I can't quite get the really low Uair -> tipper, so I usually opt for uthrow-> utilt -> uair -> Fsmash, which doesn't outright kill because I missed the tipper, but it puts them in an easy edgeguard situation.
Going for other stuff instead is fine, but not quite as optimal.