So a little Sunday evening update (before watching some Game of Thrones), followed by a question. As the pics show, things are growing nicely. I can't say enough about this Mars Hydro Reflector 144x3. Even the tomato starts that are under it right now are mini-trees. Just amazing. So strong and healthy. But back to the autos.
Both plants are at 41 days. Last feeding was Thursday and I have been up to full strength nutes the last two feedings , a gallon each.
Here they both are in the grow space, happy under the light. Polar Express on the left, Cash Crop on the right:

Now for a close up or two. First, the Polar Express. I am continually amazed at how much is going on in such tight spaces. Such a compact plant. She's about 13 inches tall and still growing, but slowly.
The Cash Crop is next. For the longest time, she grew slowly. Then on Thursday, she seemed to grow 2 inches in the course of a day and moved past the Polar in height. More spacious, but lots of pistils and bud nodes forming up nicely. Really starting to show some solid production and I think is still stretching taller by the day. She's about 14 inches tall as of this evening, but seems to still be stretching up.
All and all, so far so good it seems.
OK, so question: I am now at 41 days. Some posts on here lead me to believe that vertical growth should be done soon and I should be switching from veg to bloom nutes (I am using General Organics). That said, I feel like they're still pretty short, though clearly dense and healthy. Should I be thinking about that switch to Bloom? Or (as Darsh would urge) maintain patience til that vertical growth stops.
Any input welcome.

Thanks!!