Received some stuff I ordered from Aliexpress (stepper motors) and decided to do some assembly on PrusaDollo. Got the Y-axis, X-axis, Z-axis and LCD mount mostly done. Bed carriage moves properly on Igus dryling bearings. The smooth rods could be bit tighter, but shouldn't be a problem. Belt installed and tensioner solution seems to work nicely. Also the frame seems to handle the belt tension without problems. The knob for the LCD needs bit of redesign, it seems that this particular LCD assembly has a bit longer shaft on the encoder so the knob is quite high.
Z-axis needed some ad hoc remodeling, couldn't move the X-carriage all the way up and had to saw some material off of the top z mounts.
For X-axis and lower z mount parts I needed to use some painters tape to make the bearings and rods fit tightly. It seems that the Prusa parts are meant to be printed with Slic3r PE; KISSlicer does more accurate parts IMO, so couple of things are bit too loose.

The Z screws have 7cm of unused length. Might buy longer smooth rods and print more extensions to get full use of them.