Cub-tastic!
Other places/thoughts. I'm sure there would be plenty microlight type strips too that you could try. Any private sites suggest you research a bit and get permission beforehand.
Fuel usually readily available at - Prestwick, Oban, Islay (pricey), Perth, Inverness (may have to wait while refueller does commercial traffic), Wick, Kirkwall. All friendly enough, prices vary from £1.80+vat at Prestwick to about £2.50+vat on Islay. Average about £2.10+vat.
Bute, grass strip 10min walk to Kingarth Hotel
Gigha, grass strip with decent pub 10 min walk away.
Mull - camp under wing, good hotel, good food and craic.
Colonsay - hotel nearby and 9 hole golf course next to airfield (bring a 3&9iron and putter)
Plockton - camp on airfield, farmshop nearby, 15 min walk into town. Pubs, seal tours etc.
Knockbain - near Dingwall, friendly reception, interesting strip on hilltop.
Lamb Holm - Orkney, short walk to Italian chapel.
Feshiebridge gliding site near Aviemore .... Remote if no-one around.
Barra - land on the sand, camp on a carpet of flowers, small cafe at airport.
Private strips at Fort Augustus and Blair Atholl
Let me know if you're at Oban/Mull and fancy some float flying adventure