Plant training during perpetual grow

If I want to have a specific clone tent, veg tent and flower tent, can I still train my plants under a net during veg?

I was thinking I could train them for multiple tops ScrOG style, and then just cut the screen before I put them into the flower tent, where I’ll do another ScrOG to separate them back out?

Do you have to move your plants from the veg tent to the flower tent? Could you veg in tent A and flip it to flower? Then veg in tent B while tent A is flowering. That way your screen can go up whenever you need it and you won't have to move your plants.

I do something similar. I veg 36 plants in an 8x8 tent. I top them around 6 inches. Then veg till about 3 feet high. They aren't under netting. Then transplant under a net(and in bigger pots) its kinda a scrog but they are 7 footers when done

You could also just LST them with strings to train them as they veg and you wouldn't need use a scrog net at all. A true SCROG would have a net they the plant is grown into while it vegs and that net is designed to help support the plant, and make an even canopy. If you really wanna do a scrog then just alternating which tent was veg and flower would be better then cutting and re netting IMO.

I went through stages of trying different grow styles. After a while I settled on SOG with 45 clones in a 4x4 flood tray. I didn't spend months vegging anything, and had a constant supply of flower. I had 4 cycles going at once that were 2-3 weeks apart. So I was harvesting about 10 ounces every 2-3 weeks.

In running a perpetual I think people shortchange the need for a strong veg area
While trying to go easy on utilities
My mistakes at least were thinking it wasn’t a big deal on getting off cheap
Plan at least 1/3 lighting in your veg area and more if dimmable is even better, cause at the time you need to rotate rooms it is nice to be able to crank it up a a couple weeks before flipping

A lot of time I'll throw a loose net over my vegging plants. When they are small the weight of the net is enough. When they get bigger I anchor them down. I take it off and adjust the branches every day so that they don't get permanently intertwined with the net. It's like the lazy man's LST.

I am getting into doing perpetual as well. However, I am not keeping a mother plant so I will be pulling clones off the plants before flip.
My strain flowers for 8 weeks so that means veg time will be 8 weeks as well. My plants cannot be higher than 2ft prior to being put in the flower room. I have a large 80sq ft trellis the plants will be going into and the strain roughly doubles (maybe triples depending on pheno) in height after the flip.

I also use many LEDs in the flower room for even canopy coverage plus the trellis.
My main question/concern is would LST + Topping training for 8 weeks keep the plant short enough (below 2ft) or would 8 weeks still be too long and the plant will still be too big?

Manifolding I am attracted to but since not sure if the tops will spread out enought to fill my 8x10 ft space (Wouldnt be scrogging in this case due to the technique) enough to take advantage of the even LED light distribution fully. There might be spaces of LED light shining right too the ground which is inefficient.