You are based in Elise heaven up there. I think if I had the pick of any roads in the UK, and a chopper to airlift me and the Elise (also an S1, 99 vintage, owned from new...I share your live-the-dream angle!) then I'd start from Inverness. Tore roundabout, up to Ullapool, on to Lochinver (pies), Achmelvich (camping), on round the north for a bit, down through Altnaharra to Lairg, back up to Laxford Bridge, down to Ledmore Junction and on to Lairg again, Bonar Bridge, Struie Brae etc etc. Then perhaps up to Garve and out round Gairloch for dessert

We try to get to Achmelvich or Clachtoll for a "Campaganza" weekend most years (see Meets for some history and pics) but didn't manage this year sadly. Criminal. Watch out for that next year though.
PS Yorkshire (well the dales and moors) is my second favourite area of Elise roads too...