Hi Larry,
All will fit nicely.
I've actually modified the kit and made it an 11-Band version by adding an extra relay board to it. All fits nicely and I had room to spare to include a 5V power supply inside the metal box.
The GPS and patch antenna I installed in a separate plastic box that connects to the kit via the DB-9 connector.
System has been on the air for almost 2 years and works great, sending WSPR on all bands from 160m to 6m.
The only thing I was not able to fit in the box was the 5W PA which I built much later. But it was never planned to be in there in the first place...
73
Colin - N5GG
Colin Buckup