+1 on above. When (if) you get it give it a full Insp2 service and a wheel alignment. Bit expensive but gives a base line for future maintenance. Good luck with it. BTW keep an eye on battery cables, terminations and earth points. They seem to be the start of all sorts of problems. Get to them first.
Good - Fast - Cheap: Pick any two.
E23 735i; E32 735iL (X 2 - 1 Alpine White and 1 Glacier Blue); E34 535i; E38 735iL; R50 Cooper; R55 Cooper Clubman.
E21 318i; E30 318i; E32 735iL; E34 535i; E38 730iL; E53 4.4i