Welcome!
Haven't looked at this one in the metal but going by the advert and photos here are some pointers;
Pros; low miles, cared for, stored well and it's the style you want.
Cons;
Doesn't look to have the "comfort kit" steering modifications - expect lots of bump steer or a £200+ bill.
Almost certainly won't have the Centa compensator - original type is short lived as a rule - expect a £1000+ bill.
May or may not have the bolt in triangulated chassis brace behind the engine. This at least is FOC from MMC! Does need to be done as early chassis are prone to cracking.
Aluminium rear sprocket will (eventually) need changed to a later steel one - £hundreds...
Much as I would like to say that the early cars are the best and sell at a massive premium over the later ones (mine is a 2012!) I suspect that the price is a bit optimistic.