Well that's the basic idea. There is better light at the top for sure and your light penetration is always a limit.

If you want to maximize yield though then veg longer. Bigger plants will produce more bud than smaller plants.

One technique that people use in a SOG is to trim off the bottom few branches which will field relatively small amounts of bud. You could trim up your girls below the waist, give them a week to recover and then flower. You should end up with a bunch of decent colas doing that.