I have a couple things for you - first, in soil i almost always went 60 in veg. In coco a 60 day veg would blow up a tent, so it’s shorter, but always at least 40. I personally believe the longer you keep them in veg the better. Not only does it give the plant time to be truly mature before you flip, it also gives you time to do whatever you want with training. And obviously bigger plants and more buds. There used to be a school of thought that 60 days was the ideal target for days in veg - that’s where I got it from. I came across that assertion over and over again when I was doing my initial research.
As far as training from here, you could try a scrog without the scrog on one if you want. I use that in certain situations. Basically you start pulling the branches wide, securing them with skewers and plant wire (or whatever, that’s what I use). The goal is to make a nice ring of colas as wide as you have space for. The lower shoots from the pulled or branches will easily fill in the ring. In this method, everything you do to control the branches is done from below the plant. You use the soil in the pot to anchor the skewers. You can actually control the branches several inches beyond the edges of the pot rather easily. Then all you do is keep everything at the same level. Cut off what you don’t want if it gets choked up. Supercrop in the middle if necessary to keep it nice and even. Or bend those smaller interior branches and secure with skewers. In the end you have a plant with tons of colas, it’s round (since you make it that way), it can be sized to whatever diameter you want, and voila! A scrog without the scrog!
To show you what I mean, here’s a picture from the last time I used this method. Three plants in a 5x5. The colorful one is the Slurricane, which won me Nug of the Month for the first time.