I just bought it today as well, and I love it!
I just bought the furnishings and Alchemy table (but not the candles to access the enchantment and spell stations, as I couldn't afford it yet). I get butterflies in my stomach when I think about all the fun I'm going to have in this tower!

Perfect place for summoning creatures to practise fighting and raising skills.
Btw Hypno, I see you have Will-O-Whisps as 'guardians' of the vault, while I have Imps. Could the tower perhaps be level related like so many other things? I'm only level 4 in my new game.
Did you get many exotic books in the library? I only got the standard ones, except for one 200 gold book in the living area.
And what about the Alchemy table, did you get any expert or master equipment? I got one apprentice retort I think, but the rest was novice (I'm level 54 in alchemy).
Perhaps I should try this in my previous level 24 game as well...
Don't think I mentioned any spoilers here, as the details are on the downloads page.
Anyway I love this mod! Very impressive.