I didn't care for the add-on spool mount MakerFarm includes for the i3v, so I went with a top-side mount -
http://www.thingiverse.com/thing:192510. There are several designs that hang a spool off to the rear of the i3/i3v , but these brackets keep the weight of the spool in-line with the frame uprights. I've had three full spools on this mount with no issue.
All my details for "modding" the 8-inch i3v kit into a fairly refined printer are in my build thread at
MakerFarm 8" i3v Prusa build by Printbus