That looks very similar, if not identical, to the Vivosun scrog net in my 2’ x 4’ tent. The net I bought was actually a 4’ x 4’, so I had to fold it in half. But it works just great. I’m 47 days into flower, and the net has no problem holding up the buds. Of course, the plants are doing some of the work as well. But I think that if you can get that tight enough, you should be fine. I didn’t have any trouble making mine tight. My tent is dark now, so I can’t double check, but I think you can adjust the placement of the corner hooks, if you need to.
Your plants look great. If anything, they are going to be squeezed for space when they stretch as begin to flower. If you can space them out a bit, I’d do that. They will expand pretty significantly in flower, and should create a great screen with that net. Super cropping them would help too, to encourage them to spread out a bit. You should be set for a good yield if things continue as they have.