Need help in selecting the right board for CNC machine

Frankly I have only Raspberry Pi4 easily available here. Mesa card I need to import.

I have installed linuxcnc on my laptop successfully, i could run the tool. I can buy usb to parallel port converter, if that works

Ok then pi would be better option as its available in quite reasonable price.. I can buy. Looks like pi also doesn't have parallel port.. Any suggestion if there is anyway to start with raspberry pi.. I m ready to buy it..

Here pi 4 i could see available for $60 around.. Which works good for me

Mesa board also ok if I don't have to pay transport and duty, which is making price more than 3 times.

If i get used pc with parallel port then i can directly try out motor and solenoid valve connection directly, then yes its good deal i can find one

I think i need to read more about using connections and possibilities.. I m feeling i m asking very basic questions.. Not good.. Your support is highly appreciated.. Giving me some direction..

Your further replies will surely take me to right direction from no where..

Finally after getting our prototype working with electronic items available locally, moving to Linux CNC.

I am getting RPI 4 (8GB). Now when I looked in Mesa store, 7C81 is out of stock since around 1 month now. I observed they have only 2 FPGA board mentioned to be RPI boards. 7C81 & 7C80.
We need connection only for 3 axis motors and at most 4 IO ports. 7C80 I believe is too much against what we need.

Now would like to know, if other FPGA boards also will work with RPI? Can I go ahead and buy any similar Mesa board which is nearly matching with 7C81. Any suggestion would be helpful..