I think you're being too hard on yourself, they seem to be doing pretty good for the most part. I think you're right, a couple more weeks they'll probably doing great!
I'm sorry I can't help you, I'm going based on a combination of schedule and looking at where my plants are at vs where they should be when they're done and guessing, so I'm giving them roughly a two week flush just to make sure it's extra smooth, even if I lose a bit of yield as a result. I can't see your video btw, I get a 403 error, not sure what that's about :\ Hopefully someone comes in with an answer soon.
I think they are looking great but hard to tell how much time is left without looking under the magnifier. The video worked fine for me, it's a nice change from all the pics we see on here! My advice is to stake some of those side branches before they fall over! Looks like you've done a great job and will be rewarded soon enough!
What's the deal with your light? It seriously hurt to see those beauties getting burned! I also run a 600 watt HPS but I have a cool tube to keep the heat down. My closest bud is probably only 16-18 inches from the bulb and temps are only in the mid 80's at that level. I could get the light closer if I wanted to, but I don't because I've bleached colas before with it! I can move around directly under my light and it's not hot, I bump my head on the cool tube all the damn time! Anyway, you should treat yourself to a cool tube reflector for your next grow, you'll be glad you did!
Cheers and good luck!