It looks OK to me. Couple things, 18 " seems far away for t-8's & Cfl. So if it was me I'd get them closer. The smaller ones in the blue cups look ready to up-can into a bigger pot. check your rep.
Daniels
I'd just go with it and you will see. By bud sites I mean colas, and yield is something I can't guess. I think it would be somewhat close either way, but you lose a week or two to veg.
The answer is in here from Uncle Ben. Even back a dozen pages has it.
1 Main Cola is from the very center growing tip. It's also called the apical meristem. Clones usually have alternating nodes so it is different. You need to look at where the bottom four nodes are and where a lateral...
You got it right where to top for 4 main colas. It will make a good clone.
But I meant up-can it way deeper. Like this SS. Here's a Tangerine Dream I topped.
So if it was mine I would redo the up-can, sink it way lower so the cotyledons are barely above soil. Then wait a bit but still top...
I don't mean to be a dick but you need to re-read at least the first 20 or thirty pages. The answer to that is there even in the first 2 posts from Uncle Ben. Yes you can clone it.
Daniels
I'd up-can it as soon as you can. It shouldn't stress it at all or minimally. Soil shouldn't be dry just enough so you aren't having hand fulls of wet soil. Just moist soil is best. You want to water in heavily so there are no air pockets. Then in a couple days decide.
Check your rep...
One thing I'd say is up-can it deeper so soil is just under the cotyledons. I'd get in deeper, but it looks close to ready to top.
UB was banned so he's on riddleme's site.
Daniels