1985 GSL-SE - Sat for a long time

[MB12]

I have owned the vehicle since 1991 and after 2 kids and a move it has sat in my garage for the past 5 years. It ran great up until then with very little problems. Now I know that I am going to get the replies that say I should never have left it that long. I got that but I can't turn back time. Wouldn't mind some feedback as to whether or not you think I will be in for some major problems with the engine. I am aware that I may have some brake issues as well as some belts. The belts actually look fine but I guess that doesn't mean anything.

Just interested in your views,
Thanks,
Mike