Rook 180-225 tuned | WIP

Know Rook 180?

I've seen couple of points on the original rook 180 that could have been modified to get even more of the printer but later I saw the video about updating and creating MK1 version so I decided to stop as there should be a lot of changes and my mods will make no sense then.
I decided to upload my models as they are (work in progress) where you can use some of the design already - read notes below.

PS - this is based on the turned version.
PS2 -  this is not tested but the changes are not so significant that it should have any bad impact. I wanted to start printing but noticed upcoming changes so I decided to wait.

A. 225 BED IN 180 FRAME

1. Working - I changed the Y gantry and X carriage to get around 225 mm of travel across the X while no need to extend the frame.
   - this uses 330 mm rods - if you can only get 350 mm you can make the holes go through the Y gantries and leave the rods sticking out - the printer frame is 354 mm wide so they will not stick out of the printer if you have enclosure.
   - Y carriages are moddified to leave more room for X carriage while still having the rods inserted deep enough to maintain rigidity.
   - X carriage is 45mm wide (original version is 
2. Print area front to back isn't increased as it needed some more time (moving steppers, rods, belt tensioners) and at that moment I noticed that changes for MK1 are coming.
3. X carriage now uses two LM8LUU, is designed for E3D hotend style mount - use heatsink blower that attaches directly to the heatsink.
4. Part cooling was not finished - the radial fan is supposet to mount on the back of the X carriage.

B. Some minor changes to bottom frame only to print easier - mainly the slot holes for adjusting Z steppers.

C. I was also planning to make Single Z stepper mod (with belt gear reduction) to make the build even cheaper and as someone coming from bedslinger I am happy even without Z tilt. I am just not sure - are there any other major disadvantages this would bring? The only thing I can think of is speed/acceleration as one stepper with reduction is obviously not going to compete well against 3 steppers.

Thanks Rolohaun!