I think a 110 would be always sheeted from inside the lifelines. ???
I put a 3 foot track on the deck of my 26S that I use with the working jib (I assume this is "100" (??) and all I did was to put the center the track around the stock pad eye intended for the working jib. I think I angled these slightly so that the track moves inward as you would move the pulley foward, outward as you move the pully back.
Im planning on a similar setup as the OP - furler with a 110 so hopefully what I have still works fine..
FYI, it seems that when someone sets a boat up for upwind racing, the inside jib tracks are always "inward" or closer together than where the stock pad eye is located.. Exactly what is right.. dont know. When I first did the 3 foot, I didnt think it was long enough - maybe 4 foot was better. Then after using these for long time, I find I just dont get enough benifit to ever adjust so the pulley has been in the same spot for a bunch of years.