Hmmm... couple stuff.
First, you say "Ally". How many people are you doing this with and what jobs? From what i'm reading, you have at least 4 melee (2 initial weapon cells + 2 remaining melee. You don't bother giving weapons to mages, i assume. Not that it's important

)
People need to, seriously, state their number of people when talking about time and strategies to reach those times and mark up on specialy uncommon equipment that could be key to whatever they do. I say this because this is exactly what makes the difference between simple bragging and useful helping, which i'm sure the later is what everyone wants to do
Anyways, with that said, i see the rest of the times quite on synch with what we do, although we have to kill Bhoot/Flayer and suck at 6F =P But that is not a surprisse to me, but your 1F plan still looks odd to me.
You sneak and move on twice, kill 4 lamia and "mass pull qutrub", which sounds good to eliminate time lost pulling. We normaly clear the NW wing, which means 13+4 mobs, and we usualy see 4 weapons coming from these things, making our whole party complete with weapons. Very few instances we've had excess weapons to toss and a couple of them we've had shortage (for unimportant jobs). Always for a party of 6 though. I'd like to add here that i've always had this voodoo about this area droping more stuff the more people you took in <.<; Anyways, at 30 second which is pretty much the most efficient you'll get i think, and you'll need your brd with ranged cell (pretty sure we take much longer with just 6, but i'll have to check that one) that's 6:30 for qutrubs and 2:00 for Lamia, making it 8:30 on this and maximun efficiency. This is not counting walking time lost from the start to the first stage and then second stage which could add, let's say, a minute? 9:30. Ofcourse, you have someone at the porter, so that time can't be accounted for.
This is the time it would take to clear NW at fastest pace i can imagine, but if you increase the kill time by only 10 seconds on each mob you already jump to 11 minutes. This is ofcourse assuming you have to kill the whole wing, which would be an "unlucky" run i'd say, which you time at 12 minutes, right? With a combination of the two, i see it quite possible to finish the wing in 10 minutes as you say then. Basicly, you are just skiping the work we do at NE wing (as well as skiping the walking time, which ends up being significant when you have to walk a lot).
I've had 1Fs where we are done at the 20' mark, after both wings, so i see where you are coming from. But i don't see... the point, so to say. With this it's looking like you are getting all the HP cells from 3F, right? Do you get enough HP to have both tanks and your BRD with HP unlocked? I add the brd because from what i see, they always end up being hit by something, and it's really shitty to see your BRD die causing down time on a boss.
I'm aware i'm nit picking your strategy, but i'm trying to see how much better it would work and i'm actualy inclined to give it a try, i'm just not certain that 3F will deliver the HP you'd need to do boss. I remember this drop rate as something REALLY low, much more than on 1F.