Wireless CNC connection using RS232

My Probotix Fireball CNC machine is located in a position where it is extremely inconvenient to connect it to my EMC computer using a parallel cable. I have thought that it would be far more convenient if I were able to connect it to the computer wirelessly.

Most readily available 400MHz and 800MHz transceiver chips transmit a modulated TTL 232 serial stream. To use such a system I would have to convert the parallel stream from EMC into a serial stream for transmission and then recreate the parallel stream at the CNC machine. I plan on doing this by simply sampling the parallel port at a sufficiently high frequency to avoid data corruption.

So far I haven't been able to find much information on the following questions:
1) What would the data rate be on each of the parallel port pins?
2) Can RS232 achieve a high enough baud rate to prevent data corruption?
3) How tolerant of distortion would the CNC driver boards be? If the duty cycle of each pulse was extended or shortened for example.
4) Has anyone ever tried a similar project?

I haven't looked at 2.4GHz or bluetooth transmitter modules yet. Might they be a better way to go?

Any ideas/suggestions/input welcome.