Apricot, GSC (fastbuds) CandyDawg & Critical

So basically you want an even canopy similar to a sea of green type grow? I would definitely try to grow similar genetics so that they all finish around the same time ie indica dominant strains will finish a week or three before a sativa dominant variety Topping LST HST and netting can all be used to help keep the canopy even Good luck mate

It looks great. You can train the higher tips on the net horizontally. At the end of the stretch, you can prune the branches that are below the canopy to promote growth in the buds above.

HST the tall ones after vege growth ends. there's genetic variety as well as changes in environment from grow to grow, if they consistently grow too tall, you should train them horizontally a bit longer on average before letting them go vertically. Start taking now the timing relative to the display of preflowers. this should be a fairly consistent method to time it relative to biological flip to flower phase. (flower phase started before you could see the preflowers, but that doesn't matter) if you have a suspicion a strain will be lankier than others, train it 5-7 days longer than the other plants... while still some fog of war, you get greater consistency within a strain with better breeders of photoperiods.

It looks to be a sativa dominant variety that is still stretching mate some varieties take a bit longer to start actually flowering in earnest due to genetic factors Have patience Grasshopper

I don't see any nutes in ur wk. If not and using loaded soil I suggest u get an enzyme and or something to help it move into a bloom like a stim. And pk

Phenos can act differently especially autos. Like for instance topping can double the risks of it been stunted or act a lil weird moving through its stages of stretching before signs of pre flower (stigmata/pistils) i do see lots of tight pistils going up & down your nodes which to me shows good signs of potential colas as opposed to buds. This can take longer moving through pre flower as the more stigmata sights means slower moving through pre flower. There nothing really to worry about. But 1 thing I can see tat will cause issues. The plant in the middle of pic 1 i can see clawing. (This is signs that there's too much N at this stage I would suggest stopping high N products and less feeds & supplement the feeds wit 0ec feeds such as water r low EC such as enzymes or better yet a bloom stimulate that will help your plants many stigmata sights maybe you've used. But the clawin is an issue. Feel free 2 dm me if u need

You can also try tying it down, defoliating, and HST to get the other plants better light?! Or are you considering it because it takes longer than the other 4?

Leave it as it is. Lessons learned for next time...........

you would lose 80% of your potential yield if you removed that middle plant Mate I would continue as you are if possible , remove the other plants once they are ready and let that big girl finish I reckon you will be suprised with the outcome