Mazel Tov on your engagement! Scotland is relatively compact as compared to California, so you can see a lot of it in 10-14 days. Edinburgh deserves at least two or three nights, and I would stay in Glasgow as well for the excellent museums and vibrant scene. Plan to go at least as far north as Inverness, and to ferry out to an island for a night or two. Maybe Skye? Stirling Castle is an interesting place to visit too. A lot depends on what you like, history, nature, ruins, culture, Scotland's got it all. Geez maybe I should work for the tourist bureau.

Best regards,

Jake