Nice one Carpy,
I agree with most of the posts you already got. For some extra suggestions...
You can get some much better roof racks which are black & aluminium, with aerodynamic profiling and mounts for the square lamps.
Those side steps get in the way somewhat, and proper tree sliders will protect the sills / side panels. The Trialing guys even pivot the vehicle round them against stuff (hard to explain) if you try that with those they'll come right off.
All the recovery stuff the lads mentioned. Steering guard, diff guard, Hi-Lift Jack, Jate rings front & back...
New visa card ;-)
We bought our landy for family expeditions so a lot of my mods will be for that as much as trialing / laning. But the ones above are on my list, plus a winch for self-recovery rather than winch competitions.
Hope you enjoy it, she looks a good un!
A CB if you go laning can be handy (I got an Albrecht 6890) side mount antenae, which you put on the back.