Mothers and clones in same room??

How important is it to keep the mothers seperate from clones? Or in different rooms?

It is not important at all...
I keep my clones right next to the mothers

Yup, doesn't really matter. And basically free light if you put them a little further away from whatever you have on your moms.

Just need to keep separate reservoirs for feeding
Moms use a higher ppm obviously