yes, RRC is an excelent choise for oveland travel, electrics seem to work better with classics too
after extensive research to the problems that land rovers have had on their travels I conclude following:
the workings in a car are quite the same that defender, some have used this and upgraded their axles with defender 24 spline versions....worth while modification if you end up being loaded and are using larger tires in diameter...
(in off road use, have not heard that anyone would have broken axles with standard size tires...the larger tires are killer for 10 spline axles if driving is not carefull)
the other thing, look for the 1:41 transferbox gear change (LT230 from defender) makes huge difference if you are loaded with V8 engine, or pulling hevy loads.
as far as the suspension goes, get the douple shock system with reinforced front pilars, front and rear... I would opt either heavy duty suspension or 2" lift kit (get the stainless longer brake lines at the same time)
In my car I have rear with douple shocks, the rear ones are copy of the front ones as mirros image, with extra welded mounts on the back of the axle (see how its done in older 2 door RRC:s)
as far as the carrying stuff goes, look into web for Zarges A10 cases from germany, dust proof, alu cases...i think you get the idea quick...
Wheels, look for the cheap defender steel wheels, no need for the expesive modifications, and now using wider tires are no problem with rubbing.
please note that the only key problem with range rover classic is the size, move the light stuff into zarges boxes on the roof, built flat sleeping level on the back, put aux batterries ect stuff under that platform, set up kitchen on the back such that tail gate works as an table...
last, I would recommend the roll bar, or safety cage, I have cut one RRC in pieces and A, B and C pilar construction is
very weak, if the car rolls, the roof will be flatten completely, especially with readily loaded roofrack and stressed pilars...be safe!
ps. I have calculated that my car with complete rebuilt, will cost total of 6000-7000e when ready to go...of course I can do everything by my self...