Yes splitting it up is the best way to make the most money one thing to remember when doing so is that most collectors will not purchase some thing as expensive as an A4000T without a CPU card so in an ideal world you would refit and test the original 040 CPU card and do a base install of OS3.1 before listing your A4000T for sale.
That way you can post pictures of it up and working and give the buyer more confidence that they are spending their money on a working system that they can use before they add a better card, or keep in the original configuration if they prefer.
