If you see something incorrect in this setup, please let me know. I'm happy to do it again.
Windows installation, not Linux.
I was not presented with a FXZ 246 option. I did choose the 905.
2 FXZ folders? I tried that out before and HoB doesn't play with more than 1. Once you are on 246 no going back to 905 anyway so you shouldn't even worry about keeping it around.