I thought of some more points and edited the original post.Thankyou so much.
Can’t wait to get our Grenadier back so we can start kitting it out. After living with it in its stock form for six months travelling we have some ideas. If there is an option in the U.K. for an approved auxillary fuel tank then this may influence our decision as to what we do, if we didn’t need to take extra fuel on the roof rack then we may possibly go with a lifting roof conversion such as Alucab. No rush just watching what comes up and what is available for a while.
Good luck with the build and safe travels.