Should I keep this potential roll?

Alright, going with that for now.

Also, my gloves are currently +15% Minimum Crit Damage, Increase HP Recovery Items/Skills 30%, and 9% INT, with an SE neb. Should I try the last few for SI, or try for a second %INT line on my Badge/Shoulder/Belt?

Is it a main glove or is it just a side glove for buffing/dojo?
If it's a main glove, I'd keep it or aim for higher % Int. If it's a side glove, I'd go for the SI. I'm not entirely sure how the top line would compare to 12% or so Int though.

If you're low on cubes though, definitely go for % Int on the things that are lacking it.