I used the Compact 60 (sometimes two) as a little PA to mic my guitar at gigs and weddings, etc, for a while. It does a good job, though it’s low (I think 15V) phantom power limits mic choice quite a bit. I think I used the inexpensive little AT Pro 37 condenser mic with that rig.
I would shoot for keeping the amp fairly close at your side so you can reach over and tweak, with the speaker being about parallel with the mic. That’ll have you slightly behind the amp, which in a small quiet-ish room should allow you to hear yourself very well. You can move back or forth a little bit to find a better fit. The AER also mounts on mic stands which makes for another good option.
I’ve also use an Audix i5 mic for my guitar, but on the whole I don't like to use a dynamic mic on my guitar.
