Silicone lasts me a few months until it gets a little slippy. A tube should last a while if you’re good a siliconing yoyos. Mine lasted me about a year, so you should be good. And a kk bearing is a good thing to put in a yo, but it might make it really unresponsive.
Another thing. The bearing on the superstar might not come off easily so you should grip it and wiggle side to side to take it off and replace it, and not grip super hard and pull up, cause you might break it.
K-pads should last you a couple of months if not more. I just know from my Dv888 that they last at least that long. The glue on the back died on me though so the pads fell out.
Permatex is the best. The big choice is flowable or gasket maker. When it comes to play I honestly can’t tell a difference. Others will disagree. Flowable is also preferred by some for its ease of getting smooth and even. After a couple of tries applying gasket maker isn’t becomes easy though.
SUPERSTAR’s are my favotite yoyo. i have a wide collection but my superstar tops them all. as for putting a kk in, i would leave it stock. the gap is insanely huge so there is PLENTY of room for layers of string. the stock pads are awesome. dont get me wrong, i love my silly, but the k-pads are just fine. enjoy your superstar and make some vids.!!!