Newbie Sieg X3 and or Warco WM18 CNC conversions

[CNCMEBABY]

Hi All,

Trust you all had a safe and good festive period.

I've spent a vast amount of time getting to grips with Fusion 360 and been modelling up as much of the X3 as possible with as much accuracy as I reckon I need. Link to fusion design here https://a360.co/3EeD874.

I also spent a large amount of time in the shed making my Y axis stepper mount plate, much swarf, many broken cutters from trying to get used to machining with a flexible machine and a low powered router head. (BOXZY robot)
So here it is, my Y axis plate with stepper mounted at the rear so that it doesn't stick out the front too far and take up too much room in what is already a small space.

Any suggestions for good pulleys and belt to stop backlash before it gets introduced much appreciated - I've seen mentions of HTD5 and am thinking 15mm with 18 tooth pulleys.

Cheers all.