I think NHA would be where I would start over if I had your swing. I would guess that a pulled draw would be your predominant miss right now.
look at your last video and pause it at the beginning of the eighth second... I could be wrong but this seems like WAY too early for your right foot to be raised up like you're posing in the follow through, you aren't even close to parallel with the club yet...
Do you start hitting it good when you practice and then just keep trying to hit it farther than the one before or are you trying to hit all your irons to a similar distance. Just seems like there is too much effort going into hitting the ball as hard as possible and the system loses balance and then sacrifices the quality of the contact.
I have an extra gear but most holes I can score better if I don't use it. You don't have to be long with every club on every swing. If you have a problem saying you hit a 7 while everyone used a 9 when they ask "what'd you hit?" next time just answer them like I do and tell them "the green, cant you see it up there"