For the best set up you would have to go with the Mutoh SC cutter, problem is the SC 850 Ultima is 660mm and so no good with the Rocky print width of 914mm, so you would have to go for the SC 1400 Ultima which then pushes the price up.
If you have the budget I would seriously suggest you look at the Mimaki JV3 printer and cutter bundle as they have reduced prices just to try and compete with the Roland VersaCamm, my opinion at the moment the best pound for pound buy as got to be the VersaCamm.
Nigel