Newbie Question - Meade 6" Refractor on LXD75

Okay, I've been reading through "Handbook of Astronomical
Imaging" (and ordered my own copy from Willman Bell) and I've got a
question about a potential system I'd like to buy in the New Year.
For my budget and intents, it looks like the 6" Meade refractor on
LXD75 with the monochrome DSI III Pro would be the best bet. I'd be
doing 100% ccd with filters, so am I correct in thinking achromatic
problems would be minimal? It seems to me that spending money on
filters would make more sense than worrying about buying an
apochromatic rig. Has anyone tried this combination?
I also have concerns about the LXD75 mount itself. It has PEC and a
microcontroller drive, so I would assume it has to use a stepper
motor, but information is scarce.
Sorry for the newbie questions, but it is a fairly big purchase to
make without other opinions. The DSI III looks to be a great system
and a 6" refractor should be fairly good for an entry-level scope.

Regards,

Matt