It is always wise to have two cabinets in different stages. In this way you can cut clones from plants in vegetation before you switch them to flower. The truth is that cloning “clones” generation after generation degrades them… More preferably you should have separate mother room which is under 18/6 all the time and just cut clones from mothers. Then you just let the clones root and put them to your main room. If you time this perfectly you can change harvested plants for new clones and use your main room without interruption.
My main room during vegetation period:
Equipped with two 600w high pressure sodium lamps enclosed in cool tubes (I haven’t build any cabinet without them )