My experience with doing long trips in remote areas is to keep the vehicle as close to standard as possible.
You dont need SOA or vast amounts of horsepower to cross a desert and if you have to have parts airlifted in at great expense ,you want to get it right the 1st time.
Long distance vehicles are usually going to spend most of the time on bad roads with a heavy load so they need to be stable and the suspension needs to be designed around that.
Soft flexy rock crawling suspension ensures a rollover if you have to do an emergency swerve around a camel at 40 mph.
So IMO,a suspension lift should be just enough to clear the tyres loaded,any more is a waste.
Ive also gone back to split rims and tyres to suit after my BFGs blew out on a desert road and the nearest 33in tyres were 1500 miles and 10 days away.
In central oz ,if you need tyres, spares or fuel you will most likely have to deal with an Aboriginal community store and the service limited almost exclusively to split rims,landcruisers and diesel(because thats all they use

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I carry 2 batteries,one loose in a battery box to power my fridge,lights and soon to be purchased HF radio for the Flyin Doc.
The HF radio can also receive weather faxes,make phone call$ as well as help deal with any emergency. You have to be member of a club to receive the non emergency benefits.
After much thought I decided the sat phones and the problems people were having with billing and connections were no better than the HF radio which is quite cheap for what you get.
I have a Yamaha 1000 generator that can recharge batteries and supply power at the same time.
I dont have too much permanently attached to my cruiser. If Im seriously stuck everything can be unloaded or ditched if I need to lighten the load.
I carry 80 litres of water in 4 containers and 20 litres of spare diesel (plus 2x90ltr in the tanks)
Long distance travel requires some creature comforts to be enjoyable but its a fine line between being prepared and being overloaded.
I like a comfortable bed,comfortable chair,cold drinks and a hot/lukewarm shower daily.
Carrying portable toilets ,diabolical tents and too much furniture is a definite no no for me.