Hi LSDreamer, I have quickly read through your journal and watched the videos of your grow room several times. I really don't want to come across as an over opinionated arsehole and I would like to help but I need to be critical to do so.
I hope you take my advice as it is intended one grower to another.
1) Stop over analysing the situation, slow down and think logically.
2) Set your grow room up right first and add plants later NOT the other way round.
3) You are pushing FAR too much light for the floor space and plant numbers you have, you are thinking about the light coverage that YOU can see NOT what the plants see and because you are flowering plants that have a very small overall stature (due to the training) it's more than overkill.
4) In reference to your ventilation problem first.
You should always have more exhaust than intake, ALWAYS!
The fresh/cool air source should come into the room at the bottom, travel up under the plants and out through your filter/exhaust at the top (because hot air rises).
The way you have it set up at the moment the clean air comes in at the top and gets sucked over the parabolics straight back out again through your filter/exhaust so all that your oscillating fans are doing is just blowing the heat from your bulbs around the room.
I suggest removing the intake fan and just have a length of ducting coming from your intake hole at the bottom of the room, round the room to the left along the edge of the floor ENDING just before the centre of the wall pointing inwards (this will provide an up/across air stream with the maximum amount of overall flow). Then attach BOTH fans to the carbon filter for your exhaust (the carbon filter should be higher than it is, tighten those ratchet straps and mount it as high as you can get it WITHOUT touching the roof), You will need to get a Y splitter to attach both fans unless you botch it up with a lot of duct tape (not advisable).
Something like this but in the size you need (it will need a little tape work on one side because you have different size fans).
http://www.ebay.co.uk/itm/Ducting-Y-Splitter-Piece-Extractor-Fan-Duct-Pipe-Ventilation-VENT-100mm-4-/160696436891?pt=UK_Home_Garden_Hearing_Cooling_Air&hash=item256a41089b#ht_545wt_136
I Know it's an English link but you get the idea.
Now you have BOTH fans pulling through that massive filter (also too big for the room size but with 2 fans pulling that will be more efficient in it's scrubbing also) this will create a huge negative pressure within the room dramatically lowering your temps.
I personally don't ever use an intake fan and always run passive (it's only needed in rooms where the negative pressure of the exhaust is not strong enough to provide sufficient clean air resulting in hot spots).
If you do insist on having an intake fan then it needs to be the smallest one mounted on the floor at the wall before your ducting, with your ducting still running along the edge of the room regardless (but this will NOT create enough negative pressure within the the room due to your fan sizes, as you will find out). Shantibaba the world famous master breeder behind the White family advises having the intake 3 time smaller than the exhaust, just to give you an idea.
