Mine was Biostripped in a dip tank. Thank goodness. There were rust specks all over the frame. The old paint had failed even under the seat mount rubbers. Either that or rust was there before it was painted.
I had it powder coated with a high conductive zinc undercoat. Powder won't work with normal paint so its the next best thing to galvanised. Another option would be the same undercoat with a paint finish. Simply blasting over with Hammerite would have been a waste of time and effort.
The back subframe comes off complete with air box so the inlet rubbers and throttle cable splitter have to come away. The wiring has no back end plug (that I found) so has to be unclipped right to the rear light. Not to mention starter, gearbox, etc.
I supported my bike (engine anyway) with ratchet straps from the garage roof. The job was made up as I went along because my frame rust was worse than expected.
Purpose made wooden stands under each cylinder would be better. You may need to remove the exhaust headers to get better support under gearbox.
Taking the front end off at the same time like I did adds a another dimension of hassle as there's nothing to keep it all steady.
Take LOTS of pictures because the design is real patchwork. Nothing connects in ways you would expect.