Given that the winter season is upon us, why not make this a winter project? It is totally doable on your own (although valve work and cylinder honing/broing should be done by a machinist). Check out Saturdays Wrench on Youtube. He rebuilds his CB350 motor step by step.
Watch some youtube tutorials, print out your HSM and re-read the procedure a few times, and then start accumulating parts and tools before you start. I would suggest leaving new pistons and rings off until your machinist tells you if you need to bore out.