Hi, I'm a newbie to cnc, i've been lurking here for a long time reading and learning all i can..so here it goes

My goal is to build 5 axis cnc mill. My mill is exact machine that in this link: http://www.houseoftools.com/product.htm?pid=198686

My questions are:

1. AC Servo motors. How much power do i need these motors to have to stay in 250 ipm range with taking decent cuts in steel using 10 TPI ball screws?

2. AC Servo Drives. What's the basic terminology i need to know to find right drive? Also will these drives work with Mach3 or Quantum software?

3. Is using AC servo motor, drive system needs extra components in comparace with dc servos?

4th axis will be rotary head attached to the table and 5th axis will be tilting head with iso40 taper and 7,000 rpm software controlled motor

thanks, BTW great forum