The Landy 110 County is the ideal vehicle..carries your friends with all associated kit, easy to drive ( and park surprisingly!) excellent fun off road if you know where to go legally, or on off-road club courses. A 90 is just too small for good utilitarian use. ( a 2 seater in effect)
I have a 1989 2.5TD , get 32 mpg on motorway ( 60mph) and about 28 in town. Most country roads are 60 anyway! Have driven 8 hour trips to Scotland on many occasions, and the Landy was the most comfortable to drive, stress free as everyone but lorries are overtaking you, and it only takes me an hour longer than when I used cars!
I can sleep in the back and I'm 6' 2" but far prefer my hammock between 2 trees!
Shop around for one with a solid chassis without too much rust, use waxoyl, and you should pick up one for about £2500 to £3500, with parts a plenty and not expensive. A novice can service easily following a Haynes manual. A good set of rugged All Terrain tyres and you can get anywhere! Insurance for mine is under £400 fully comp, including off-roading, on about 7500 miles a year.
If you want really rugged, ex-army are well maintained, and can take a battering and still look good, but good examples can be pricey. Talk to a land rover club for advice on where to buy , buy a Land Rover Enthusiast magazine, and always get someone who knows landrovers to come along for any test drive before you part with your hard earned...it is easy to fall into the " Land Rover Love at First Sight Syndrome" !