RE: Control line to RC, what modifications?
About the only things done specifically in CL designs were:
In stunt airplanes (mostly) some designs had the inside wing slightly larger than the outside. The usual method was to shorten the outer wing by half a bay. Doubt the Marauder plan is for a stunt airplane but it's easy to check.
A lot of CL airplanes had the rudder or the fin/rudder offset. You're probably going to have movable rudders, but look closely at the plans to insure that the fin isn't offset.