Getting my second tent ready

Getting my second tent ready to grow one beauty of a plant. Should i build the scrog in early veg and what height should my first scrog like be in a 36x36x72 inch tent?
Running a 315W ushio 4200k CMH for veg and a 3100K Phillips cmh for flower,also suplimenting florwer with a 300W blurple.

I would start topping at 3rd or 4th node, top 4 or 5 times, keep her short and bushy

When you set the scrog net, ideally you want to be 8-10inches above base of plant,

So depending on what size pot you are using height wise, and how high you can set your lights at max heights then you will know how high you can set the net at max

Groweedeasy has LBH scrog tutorial, anyone new to scrogging should read that first