The FC8600 controller works for the FC8000. Just do test cuts and figure out the blade offset. It shouldn't be that hard.
This used FC8000 I got, came with a red top holder and no blue. I had some spare holders for the regular blades to use.
The Graphtec Cutting Controller will not launch until the cutter is sitting there ready to cut.
Maybe try roll 2, but keep in mind,( that I am thinking,) you will load it from the front to the back to cut. An option for the FC cutters is that you can put the vinyl and the rollers in the front, and feed it that way. Front to back. That is probably what roll 2 is for. I have never tried it.