Just the other day i was looking at my Z axis thinking" Good that i invested much time and money there, so no i dont need to move table up and down" ,not that i could lift 300kg table anyway. In other words i prefer very strong Z that could reach down and do the job without need of additional fiddling around.
When i was designing my machine i had the idea of using additional support to lift the material, but as i made it OTT, in fact i do not need anything additional.

So that is my advice.