As long as you have identical grow systems (height wise), and similar lighting systems, I would do them the same size.

That way, you can start the scrog while vegging and just swap the lights/bulbs when flowering, alternating the usage of each section. With more time comes better control over your scrog, better use of LST, and more production per plant (also fewer plants needed so less legal risk).

If your lights are different sizes, consider bud training to manage distance from the lights to prevent light burn but maximize available light.

If you were using SOG then one smaller one bigger makes sense.