My experience also says that the car is likely to be off the road for longer than you expect, simply because you’re waiting for parts. For example, I ordered new springs all round from SJs on 9th October, they were shown as “in stock”, I’m still waiting, and a phone call yesterday suggested they won’t be dispatched before the end of next week at the earliest. Which means the car’s stuck on a lift, undriveable. And I have a part dispatched order dating from August which I’m still waiting for. OK, it’s a lesson learned for me, but I thought a month or two would be ample to get bits. And don’t even get me started on Samco hoses - currently on 3 months lead time.
What I did with my car, following Pinky’ sage advice above, was to buy it, do an essential service/MoT including cam belt and then drive it for a bit - partly to enjoy, and partly to start building up a list of what needed done. Enright of this forum had an excellent spreadsheet of jobs that are good to do, from which I borrowed shamelessly. Then plan out a couple of winter projects. Last year, I redid the dash electrics, including a new alarm/immobiliser. This winter it’s the suspension/brakes/chassis. And next year I’m planning cooling system and gear cables (because you need to take off a lot of the cooling stuff to get to the cables anyway). In the summer, drive and enjoy. Takes longer, but lots more fun
Of course, if your car’s in an absolutely terrible state now, you’ll have to do some work. But remember why you bought it, and try to get at least some enjoyment as soon as you can. Apart from anything else, it will comfort you enormously as you wield the trusty blowtorch to remove yet another rusted bolt
Sorry this has turned out so long, but hope it helps. Whatever you decide to do, good luck, don’t be afraid to ask, and see you at Castle Combe.

