lcvette,
You have a beautiful machine. I would be careful in selecting the cnc control. The MASSO controller while it looks great from a few videos posted it is really not ready for prime time based on the few people who have posted their experience on the zone. LinuxCNC is a good package with a realtime environment which is great but you really need to be a programmer to implement everything. The commercial type controllers like Centroid are very robust but also very costly. The KFLOP/KANALOG boards from Dynomotion.com are very robust and often used when several people upgrade old industrial iron, look on youtube. They have some C programs that need to be modified to get everything working but they have fantastic support and can handle everything I have seen on your machine including the tool changer, spindle, servos, etc. The Dynomotion hardware costs $250 for KFLOP, $250 KANALOG, $200 for KCONNECT the additional IO board, etc. The hardware comes with a very software called KmotionCNC which is very good. Unlike Mach3 it is very repeatable and never goes off and does stuff unexpectedly. Just my two cents. I have KmotionCNC and Mach4 with a Ethernet Smoother stepper on my two machines.
Russ