First and foremost, best desert tire size is 15 inch or 16 inch. 17 onwards it becomes crap in sand per my personal experience. So increase the base and profile of tire but not rim size. You can look into like 300+/75/16
About ur lift kit names, all australian brands mentioned above is commonly available in Dubai (Ramy Trading, Icon Auto, Robbies Garage) and Sharjah (MOCA, Tazweed, Golden sun). In US list u can get Ranchos an EMU, but im not sure about other names, never heard so far here locally.
New shape Pathfinder here, we call it plastic pig. That means you really need to protect under body very well before hitting wadi's and serious dune bashing. Weakest point is plastic protection under radiator base, easy to hit on slightest road bump....!