Yep, couple of mist coats to keep everything in place. Then slather it on and lock the loose parts in the clear. If you can get clear underneath the big chips, you can push on them with a toothpick to push them flat against the glass.
I still kick myself for cleaning my Alien Poker backglass before I triple thicked it. It's still decent, but I went from perfect lettering to flakes in it during the wipe down with Windex. And, of course, I even joked with my wife beforehand that "most collectors would cringe if they saw me cleaning this thing first."
On the other hand, there was a lot of dirt and cigarette smoke caked on the back.
So...
Good luck.