You need a good DA and 80 grit. I wouldn’t use that stuff for fear of adhesion problems later

Looks great. What color did you use for the gold/yellow? Perfect match.

Just buy some cheap used clear plastics with them on. eBay has a bunch, cost you 15 bucks for a plastic with 5 or 6 standoffs.

It’s easy to just stick a hot soldering iron into the top of the bell for a few seconds and wiggle it out.

I usually round the nipple of the standoff just enough to press them in the plastic.