Mines going up for sale some time in the next fourtnight if your interested?
Californian import, microbus, brake overhall, New window seals, New CV and ball joint boots, rebuilt shifter, new tyres, full camping interior, UK compliant lights, nice running 1.6 that's been setup professionally with a gas analyser etc and a fresh mot.
Will be looking at the £8350 mark though which is over budget but requires nothing bar a headliner.
As for importing yourself bank on the cost of the van plus 1500ish shipping, 500ish decontainering fees this end, transport cost from docks and UK import duty at upto 20% of the combined purchase and shipping costs. Don't forget ground transport in the states too.
Time scale is roughly 5-10 days on the docks either side plus 4-6 weeks on the water depending on your departure port.