I know the feeling, I was in desperat need of money so sold of my A4000T/060 and kept my A1200/030 and boy did I regret that up to the day when I got hold of an A4000T/PPC again. :-D
If you need the most money and most space then there's only the option of selling the tower in bits or as a hole. Remember you'll have to live with the knowledge that you've sold of you're phat Amiga then...
If you need "some" money then remember that a 060/50 card retrievs a nice bit of cash and you could use the rest of the bits from the small system on the tower. That way although you've sold something you've actually improved the best Amiga you have and it could be a nice tradeoff for you're wallet and soul. (I've always thought it's better with one realy phat Amiga than a few middle range ones.)
