Very nice recovery and well done bezel-replicas aswell.
I'd not put USB-ports in the front, but into the top infront of the tuning-dial. The old big knobs would be great as fancontroller and volume-controller and the small ones below as power and reset with momentary rotary switches.
Oh, and momentary rotary-switches are actually easy to find, if you know the right places. In scandinavia we have elfaelectronics
for all the electronics we need, and they have a variety of momentary rotary switches. They ship to the rest of the world aswell.
I even found one on amazon.com
for $9.95 that should suit you well