Yes we'll have to be inventive with the storage! The LPG tank is going across the bulkhead behind the front seats - it'll be boxed in to protect it. I could do without it being inside the body to be honest, but the alternative - sticking it in place of the fuel tank doesn't look too good to me - while people have done it this way it looks far too exposed, both to potential impact damage and to the elements, hence my decision to put it inside.
The batteries I am considering are a pair of these -
https://www.tayna.co.uk/G8-Varta-Blue-D ... P3216.html They're 830A CCA and 95Ah rated. I've previously had a pair of Odyssey batteries in my old D2 Td5 which were great for me, but when my friend bought them and had an issue with them later, the aftersales was shocking - they weren't interested at all. So I won't be buying those again. The Varta option is cheaper and I've never had any issues with Vartas, so its simply me playing safe. I'll be re-using my national Luna split charge kit and most of the old battery wiring that I salvaged (I bought really good quality cable, way over spec). So the idea is to put the batteries and the split charge system in one underseat storage box, but I think I'll need to make a custom box for this as I can't see a dual battery tray that will hold these. I'll then run cable from the 'house' battery to a fuse and relay board mounted behind the passenger seat - again inside a protective box. This should allow easy access as required. I'll have an Andersen connector hooked up to the starter battery so that I won't have to remove the seat - they'll probably end up being SAAB seats to give us long distance comfort, and seat heaters which the missus has insisted upon!
Regarding the rear wing lockers, I'm thinking of using a pair of the Rhino Jerry Can Lockers -
http://www.fcx.co.uk/#!product/prd1/258 ... an-lockers. Again, not a cheap option, but it has stout reinforcing beams which addresses my worries about sticking a couple of full jerry cans in them! So we'll have fuel on one side and water in the other. I might look at a smaller locker behind one of the rear wheels as well to store some engine oil, the jack, recovery strops etc. Simply because it'll keep it all out of the cabin where we'll need the space for 'camping' stuff.
Interesting to hear that an 80W solar panel is adequate to keep your battery charged! Our fridge is a large Engel and is supposed to be very efficient - around 4amps on average, but we still used to flatten our leisure battery with it, and that was just over a weekend. I was considering 120W ones, but I'd happily settle on an 80W if you've found that to be adequate! (I need to cut the budget back somewhere lol). What brand are you using if you don't mind my asking?
Most of the remaining house battery load will be minimal - we'll be using LED lighting internally, and the side/rear work lamps will be LED as well.
As you can see, we've thought long and hard about what we need, we just have to get it all sorted out and fitted..!