Got a newbie question for those that are familiar with FlashCut retrofit kits. I have a Grizzly G0619 (an X3 type mill from what I understand). This is purely for hobby use and will be my first experience with CNC. I'm trying to decide between the Compact kit for $2,400 or the Pro kit for $3,800. Neither of which includes ball screws. Is the additional $1,400 worth it?

The third choice is piece something together myself...