Wow, I didn't expect quite so many responses so quickly!
Phil, that route you describe to Gosforth is exactly what I was planning, I'm glad to hear it's a scenic route! I'm also planning on visiting the Ravenglass to Eskdale railway. It looks like the easiest route from Gosforth to Wishaw will be the A595 then A74. I'll probably just sit with the trucks on the motorways but my car is in good condition so can happily do 70.
I bought a spare fanbelt, bulbs and fuses today and I've got lots of oil, bungees, cable ties, multimeter etc. I've got electronic ignition fitted so no points/condenser. I do have a spare points distributor though in the unlikely case that it fails.
I don't see any reason (fingers crossed) why it should give me any trouble. I fully rebuilt the engine a few thousand miles ago, it's had a new clutch and the gearbox is good, it's got new tyres and new front wheel bearings. I've changed the oil (including gearbox and diff), greased everything, done the valve gaps, new air filter, cleaned and gapped the plugs and adjusted the brakes. I've also got oil pressure and temperature gauges fitted so I can keep an eye on things. I've even got lead additive, which I don't usually use, since I'll be doing lots of constant motorway miles. Still, you can never be too prepared!
I will of course let you know how it goes and post some pictures
Keep the suggestions coming!
James