Replying to Setup help needed

hi, im a new user and wanted to hear what you guys thought about my current dilema. i hope this is the right forum
right now i have 2 pairs of skis and am looking to pick up some fatty powder skis. i can't decide how i should organize me quiver
i have a pair of 170 liberty kgbs, a pair of 179 fujatives pretty beat up, and a pair of salomon 810 bindings.
right now i have the 810s mounted on my libertys pretty far back. my fujatives have no bindings right now but are drilled for center. would i be better off mountain my libertys with a pair of salomon 910 bindings in the center or mounting them a little back. basicaly i want to have them set up so i can have a pair of rock skis, a pair of jib skis, a pair of all mountain cruisers. would i get better all mountain use out of the libertys or the fujatives do you think? thanks