Oh to be 23 again 
IMO - forget the trailer. If you can't carry what you NEED to go camping for 2 people in/on a 110 it needs a re-think of what your real needs are.
In a diesel, a standard tank and a maybe a couple of jerry's gives you a pretty decent range and is a cheap starting point. If you find you are doing mainly longer trips and fuel storage is a hassle then look at long range or extra tanks but if its only occasional then save your money.
There's no frypan in that list - so how are you planning to cook your steak/bacon/vege-burgers 
Generally, what sort of camping are you planning on doing? Basecamp style (if so how long), or travelling where you are packing up and moving to a different location each day?
Steve
1985 County - Isuzu 4bd1 with HX30W turbo, LT95, 255/85-16 KM2's
1988 120 with rust and potential
1999 300tdi 130 single cab - "stock as bro"
2003 D2a Td5 - the boss's daily drive
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