Ours is the same age, but listed, it was no where near a wreck but had not been touched in over thirty years by the previous owners,
We have had the floors sanded, beams sand blasted, new kitchen installed, decorated throughout, new lighting, up graded fuse box, new electrics in out building, some panes from leaded windows replaced, patio and path relaid, extensive landscaping done in garden, new and very expensive massive rugs down stairs.
Fitted wardrobes going in next month to our room, and will do the main bathroom this year.
We try to do one big thing a year, this year it’s two (fitted wardrobes are ££££) as they need doing.
Do it one step at a time, don’t rush at it, plus I’ve found you need to live in a property for awhile to understand what works for it, otherwise you make costly regrettable mistakes.
Good luck, it’s worth it, things like the attic can wait, do the things that need doing first, live in it, then make some decisions as you go along.