I don't grow for speed because most of the time I'm using the SCROG Method. This means I keep them in Veg as long as it takes for them to fill 2/3 - 3/4 of the SCROG trellis. The Flower stretch fills out the net. That can mean up to a 60 day Veg. Although, 50 days seems enough most of the time.
I call my technique more of an Extreme SCROG, because mine isn't to just support or stabilize tall plants. My technique keeps the trellis only 6 inches above the pots. This makes the plants grow horizontally like they are vines. At some point you stop "tucking" the branches and let the buds go vertical. By the 3rd week of flower the branches are so stiff you have to stop or you start breaking the branches. I learned this from watching "Northern Scrogger" on YouTube.
My next grow with the Irie Genetics Testers are going to be more traditional. I'm growing them in 6 gallon AutoPots. When I grow this way, a typical grow for me is 5-to-6 weeks of Veg and 9 weeks (+/- week or two).
I totally understand why people want quick turnarounds. However, for me, it is the love of the grow and then doing my photography as they mature.
I recently read where some folks are never letting the seedling see anything other than 12/12.
Back to my current grow, these two plants I messed up on when I realize I hadn't changed to 12/12. That added 10 more days than my other tent.
This grow seems like an eternity, especially by the time it is cured.
Vegged for 9 weeks
Flowering will will be about 9 weeks + 2 days.
Drying in my Set up is about 10 days (could go a couple more days depending on the weather)
My cure is another 30 (at least) in Grove Bags (heat sealed).
56 days + 65 Days + 10 Days + 30 Days = Eternity : ) (161 Days or 23 Weeks)
Ugh! That's a long time.