[chrismorse]

The number of outlets is not a significant factor. The convenience of having an outlet where you want it is. The critical factor is the wattage used, at one time.
If you have 12-2 wire going to the box, you can up the breaker to 20 amps from 15. The wire size dictates the breaker size, to prevent overheating the wire.

Canyou dodge around, over, under the box to avoid going through it??? I;m not sure i followed your planned installation correctly.

Surface 1/2 emt, conduit is fine for a garage,
Rather than pulling 12-2 romex, i would recommend running #12 THHN, stranded wire, which is a lot easier to pull.
I would recommend using an industrial grade receptacle because the construction is more durable, particularly in areas of high use. The household 15 or 20 amp units are built for price not serious use. If you move to a 20 amp breaker, upgrade the GFCI to 20 amp rating.
While you are "in there :-), consider lighting, possible running 4 foot LED fluorescents, for better lighting and lower wattage use.

Since the panel is right there, can you use a "piggyback" breaker to add another circuit for any future high wattage uses, like a compressor,welder, or lift?? That way, you could pul all the wire at one time.

I like electrical :-) just spent my sunday doing the wiring in my step son's first home.

good luck, You can do this,
chris