for the AC motor I would use a VFD, to drive it at variable speeds. The "cheap" ones always support remote control using a digital and analog input ("Enable" and "speed")…
For reading your sensors you need to define the signal type in more details (voltage levels? current signal? sample rate?). I guess you will read analog inputs (proximity) and counter (speed sensor). Call your local NI sales rep and ask them for suitable DAQ devices - after you sorted out all the details!
Best regards, GerdW
using LV2011SP1 + LV2017 (+LV2020 sometimes) on Win10+cRIO