http://i.imgur.com/HQynk.png

As i don't have enough money to get them all, one of these must be sacrificed, but it's really hard to choose which one i should skip (or wait for the next deal).

The only games im getting for nostalgia are the Little Big Adventures, never played the other ones

Also, any genre is fine for me, as long as the game is good to just "pick up and play"

If you already own Civ III then you can skip SMAC.
Civ III is superior in almost every aspect and is a far more polished game.

I would skip Ultima 4-6 because of how dated they are.

I'd second ultima 4-6 as well

Yep, you may skip ultima 4-6 unless you are completely dedicated fan of old school RPG games, and you are not afraid of playing in window with intruction manual opened all the time :P

I am not, and Ultima 4 gave me a LOT of fun playing. Also , Ultima 6 is rather user-friendly, I would say.

But yes, from this list, it's ok to cross out Ultima 4-6.

Ultima 4 is for free, you can try this first and then decide if you really want that package.
Dungeon Keeper 2: has some problems with newer graphic cards, so better check the subforum for more details. Alpha Centauri comes without the expansion.