[Cory]

If you don't have an existing use for a 4th axis there's not much of a reason to buy one. We bought one and it was a waste of money. We haven't used it once.

The option is for drive and wiring. You need to buy a rotary table in addition to that. All told it's roughly an extra $10k for both the option and the table.

You can get a chip auger/conveyor. That's a $2500-5000 option. Otherwise you scoop them out by hand.

Coolant is a concentrated oil that you mix with water to the proper percentage. You can't really run it effectively if it's half full or less as a fairly large quantity of coolant will collect inside the enclosure and then slowly drain back into the tank. If you only had 25 gallons to start with you'd be pumping air and coolant, which is bad.

1 MB of memory is fine but you will have to delete programs from memory eventually. I have 76 programs on a flash drive right now that are taking up almost exactly 1 MB. So you'd never need to have more than 1 MB of memory to run a program unless you actually were doing serious 3d contouring.

I don't want to sound rude but it sounds like you guys don't know enough about CNC or what your needs are to properly select and option out a machine. All the fancy options in the world won't do any good if you don't know how to use them or have a need for them.