This is very basic representation of parts, hope it is clear now why I need 2 motors on vertical rotation, and yes - I will go with the belt because it really is more logical choice. For the next move I need to pick pulleys and belts, any suggestions? Btw, maybe it would be more appropriate to go with Nema23 and shorter motor than Nema17 and longer ones? (I don't need to pick exact model just yet, I just need mounting specs)