Nothing wrong in getting an L5 with it all and she can have a hot shower then, tell her to stop moaning!
Thinking about it, forget the L5 tell her to have a cold shower out the back of the van. Some people!
I'll get one closer to winter, but cheers, Matt.
I'll also get a bucket so she can 'go toilet' in, in the back of the van, so half our day isn't wasted travelling to public lavatories. (I'm such a gent!)

I reckon the time saving that'll produce will be worth more than any WFP set up.
A rough calculation for all the gear, not including poles or R.O. system (I've a decent one of those) is going to be about £1100.
Holding tank (I can maybe get one for free)
500 litre tank £200
2x hose + reels £200
variflow £90
Leisure battery £70
Rachet straps £50
Protektacote £110
Misc ('cos there will be something I've missed) £300 - ply lining and insulation maybe?
Does that sound about right?