Just make sure to check all the nuts and bolts before you leave and also every week or so. Did some off roading in mid England over easter and had both the bolts that hold my RHS exhaust remove themselves and therefore bye bye exhaust.
I just had my RHS fork seal let go at around 38k miles. Ive done 4 full days off roading, plenty of wheelies and alot of fast/rough riding so i think they should last long enough.
The wheels are ok but not the best, as long as your not racing along they will take the knocks and rattles ok.
The engines, clutch, gears etc all seem ok the main problem i had with mine have been electrics and bearings in the wheels/rear sprocket.
Depending on the amount of off roading your planning on doing i would either bring another set of front pads ie 1 set each then a set of rears between the two of you.
Apart from that the usual, bash plate, foldly brake and gear levers, new rubber and plenty of petrol. Done
