Dream -

you will probably have to come up with your own lines, since most r/c boats are of the trimaran configuration. Even at 1.2 meters (48 inches) you may find the hulls too narrow to house a winch. It might require a central "pod" and for that reason, many don't build cause they don't like the looks. A builder from the UK had one (and the only one) that I've seen photos of that actually was a nice looking boat.

Just like big cats, the little ones suffer from pitch-pole and over-canvassing. Since you aren't aboard, you can't feel weather hull go light until it's out of the water and too late. Movable ballast is possible, but again, it will be reactive - not proactive. Ad in the inability to back wind the jib easily (you can with a second winch/radio channel) and it probably explains lack of interest or numbers of a cat configuration. I started on a 1/2 meter of my own cat, but got disillusioned with trying to make it "look nice".

These two from Australia.


And two from US - mine has the pink wing-mast.