Summer adventure?

I don't know if I've said this before, but I love travelling. And I haven't travelled much for the moment, so I'd like to have the chance to do it more times. Well, it relies on the way you look it...I have travelled a lot of times to the same place, Majorca, since my father is from there and I have gone, at least, once a year in last years, and when I was smaller, I used to go twice a year. But I mean, I'd like to visit much more places than what I've visited.

Apart from places like Barcelona, the Pyrynees, Madrid, Miranda de Ebro, Majorca, Eivissa, and several places in the Valencian Country, I've also visited Scotland and the south of France.

And next summer I want to do it. A madness. Well, yes, I've got in my head the idea of a trip. It would be something like...:
Take a plane from Valencia to London. Stay there for 2-3 days. Then catch a train or fly to Glasgow -yes I know I've been there twice, but did I mention I miss it?-. Well, stop. Relax in Glasgow...and if possible, go to a Celtic match. Ah, obviously I'd have to travel in august if I want to see a match! After Glasgow, it'd be nice to catch a train to Inverness, in the north of Scotland, and stay there for a couple of days. I've heard it's a nice town, and furthermore it has Loch Ness! I want to do some monster-spotting, hehe. Afterwards, I'd like to go down and visit Edinburgh better. I was there in my first time in Glasgow, but only for half a day, so I didn't see much.
At this point, there would be two options: one, fly home because I'm not rich and someday money would be over...but if I still had some, I could still visit another city in England, Manchester maybe, or something like that, who knows...

Well, I've been looking at plane and trains and hotel fares and if I don't make the reservations too late, I could get all this at a reasonable and affordable price, and what's more, in Glasgow I have bed and food for free...but well, there's still time, maybe I change my mind, or maybe not...but I want to go somewhere next summer!

PS: Suggestions about what to visit/do in London are welcome!