Absolutely agree. If the OP will do both the VFD and steppers (which includes a new controller board for the machine cabinet plus the 3 steppers) he'll have a series III machine in all but name. At $3K plus the cost of the upgrades (about another 2K), he's got a current stepper motion machine for less than half what it would cost used. Deluxe base and a lot of options.
Totally agree about PDB, too. Get something. Other options are truly optional, but the PDB really makes a huge difference.
I'd also add that a touchscreen is awfully nice. Not required. Really nice.
An absolute steal at the price. Looks to be in great shape, probably next to no hours on it.