Gsa-4160 & mmc-003

Does the 4160 burn these these Mitsubishi 8x discs @ 12x?

Unique Disc Identifier : [DVD+R:MCC-003-000]

Also, what is the top surface like of those particular ones (branded, shiny, etc.)?

The Mid code is at least supported, at least from firmware A302, look
I can´t really say if you can burn it faster, though, never had these media.