Nor/Central Cal, doin' just what you queried, vegged 5 Trainwrecks inside from clones, for 3 1/2 months, ferrying them outside when the temps allowed, then back in under flour aquarium tubes to keep an 18/6 light schedule, and they tuned into these monsters. Went into the ground on May 28th. I topped them starting late June, now I have BRANCHES, LOTS OF THEM, topping over 7 1/2 ft, and pulled down at that. These things would have been 12 ft easy if I had the overhead to let 'em go, for sure.
For comparison, some dispensary clones in half barrels, same soil, same water shedule, only vegged like the others for about a month. Being in the barrels may have something to do with it, they do seem to grow to fit the environment, so the bigger the planter, the better, for size.
We'll see about yield, kinda hard to predict that.......