Wish I had some direct experience with that. My experience with roller furling is with my Hunter 170. Since the forestay and furling drum is disconnected to allow unstepping the mast, the furling line is disconnect, then reconnected after the mast is stepped. The trick there is to wrap the jib sheets around the furled jib three or four times so that extra line will be wrapped around the drum as the sail is unfurled.
The number of turns on the drum will be affected by the size of the rope used. If I were to trying to set that up, I would, on a calm day, hold the clew of the foresail taut while an assistant rotates the drum (or vice-versa) to furl the sail around the forestay. I would then attach the furling line to the drum. I would then wrap the foresail sheets around furled sail at least four times, then pull on those sheets to unfurl. Theoretically, wrapping the sheets around the furled sail four times will spool four revolutions of line onto the drum before the clew starts to extend from the "noodle", hopefully enough to make sure the sail can be furled adequately.
Hopefully someone who has actually done this can chime in.