TweetYou can use that 25g 5/8" for a lot of things! Hell, you can use them with oils if ya have patience. I use them for bi's, tri's, delts, traps, and calves...They are wonderful, IMO.
As far as B12 in the chubby areas, I dunno...Wait on feedback for this, lol...
The kyno sub-q? BE CAREFUL! It may leave burn marks. Shit stings and burns like a MOFO sub-q...