I have never cropped before

If anything take an auto out of the tent leave photo in there and monster crop it because it will stretch taller than the autos. Take off all large fan leaf blocking light

If I dont crop will a scrog work?

6 feet tall… 72 inches
23 of the floor… 49 inches
Foot to hang light… 37 inches
2 feet from light to canopy?.. 13 inches

All that sound about right? If so, u can only get 13 inches worth of plant in there.

A scrog would help keep them at a certain height. Cropping as well.

I would think 1/3 the height of tent, allowing them to possibly double during stretch.