Just be sure you can easily access it. If you are trying to scrog with a mix of sativas and indicas, you will be messing with the sativas 95% of the time, so just be sure you can reach them easily and comfortably. I usually don't use a scrog net if I'm doing a mix of indicas and sativas, I just top for the # of colas I want then train for an even canopy. If you want to use a net, you should veg the indicas longer than the sativa and then flower the sativa while it's still small. My current tent has a hawaiian snow in it that I vegged for the same amount of time as the other plants and it's a monstrosity, I have branches snaking around all of my plants, reaching every wall and I supercropped it daily during stretch. Some of the branches were supercropped 15 times each. I keep my sativas in the front for that very reason, easy access (but again, not using a net with it.) Planning is KEY with the multi strain grows that include a pure-ish sativa.
