Fighting back the Gamer ADD

I was talking to my players this week and they really asked me to fight back the Gamer ADD. They had a real blast playing in Mystara and running through Castle Amber and they would like to keep these characters for a while yet. One of the players is lamenting that he has never had a PC make it to over 10th level and would like to try making it there with his wizard character in this game.

I told them that I have a group of adventures that I've been buying up that should get them up to at least 10th level and maybe beyond.

I'm thinking to run them through a heavily modified Master of the Desert Nomads (which could have a massive detour to the moon if the players play things right), followed by the Temple of Death adventure. That alone should get them up to about 8-10th level.

Then I'd like to use one of these three products that I got off Ebay:

Isle of Dread (maybe I could beef it up a bit for high level PC's, add some kind of twist?)

Empire of Dawn boxed set (I'd like to take my PC's to Alphatia and have some cool mid-air battles among the ramparts of flying castles).

Hollow World Boxed set ( I got this whole boxed set for free, the guy threw it in with another product that I purchased, I think it is pretty neat, and the altered game physics with the magic and stuff could throw off my players in a fun way).

Does anybody that reads this blog have any other ideas for really good 8-12th level adventures?

After some greater than 10th level play, I want to reboot our campaign and have the guys start brand new PC's at low levels. I'd like to run in forgotten realms. However, I would also really like to run Rolemaster - my series on running Forgotten Realms and Rolemaster together probably all ready showed what I'm thinking about. However, my players are really loving the stripped down aspect of Basic DnD and I'm not sure if they are ready for anything close to Rolemaster. They are asking me to "quit it" with the changing game systems each week stuff. It is hard, most of the time I feel like this guy...