Exhausting+Filtering 2 boxes/cooltubes w/ 1 fan - any input appreciated!

I am currently setting my grow which is going to be a veg tent with 250w MH and flower tent with 400w HPS.

I have all of the items and am putting it all together now..
I bought a grow tent for a temporary 'box' that was 5ft tall, 3ft wide, and 20" deep.
I can cool the 400w in it with the inline fan just set on top of the tent w/ a flange down in the vent hole, on low..
The reflector that the 400w in (6" 2port glass covered reflector) got a little hot but the temps in the tent stayed okay..
I put 2 small medium-speed computer fans wired to a DC adapter in the ports one blowing in 1 side 1 blowing out the other and it cooled it down to almost ambient too..when before it went up to almost too hot to keep your hand on..prob 120-140F

I am thinking with this elicent 6" fan I can cool both boxes hopefully as I am only using 650 watts of lighting and two reflectors, well 1 reflector 1 cool tube..

I am prob gonna keep the 250w in the tent and build a wooden box for the other 400w hps...

The problem is the fan, though very quiet for an inline fan, is still a little noisy considering I live in a condo w/ attached neighbors.

I am hoping suspending it in a wooden box via bungee cords as shown will dampen the noise..
I can also build a smaller wooden housing around the fan first before putting it in this box..

Does anyone think this will work? I think the fan is rated at ~340cfm..
I am planning on getting a Can Filter that way it's even density and lasts long and is good quality..I hear, and believe, they are the best.. but am always open to others opinions on that too.
I'm planning on getting a Can 50 which I believe will make it about 280cfm max exhaust, but I will have a speed controller on it in case even that much isn't necessary maybe..
which it might not be now I am thinking?
Any thoughts?
I need help on this!! hehe..

At first I was thinking I needed overkill exhaust and got the fan for the 400w flower box by itself and was planning on another small fan to exhaust the reflector on the 400w too..and hadn't planned for the 250w..

Now I am thinking I can cool it like in the picture..
Anyone have any ideas or see lots of troubles coming out of this?
Filterbox:


Hooked up:




Thanks,
-J

looks fine to me

classic! nice McPaint.

Looks good, with tight connections (no air leaks) i dont see why it shouldnt work. If the 400 gets hot maybe try using a smaller duct for the 250 so the 400 gets more air pulled through it?

Awesome! I will probably be trying this then..
If it ends up not being enough air I'll get a second fan from like soler & palau like their smallest one and use it to vent both reflectors independent if the exhaust I guess..and use that setup pictured above just for exhaust and have it pull from the top of each box..
then link it up so the cooltube + reflector from both are a straight shot goin in-out in-out of each box without mixing with the air inside of the boxes..
cool so I guess I'll try that..worst case scenario is I need another fan..which I already do anyway!
edit:
i added an update on the setup in mspaint (thanks for the mspaint kudos!! lol! pros use mspaint photoshop's for n00bs! =P)
So yeah anyway i added another fingerpainting..because this is probably what i'm gonna have to end up doing..
for the fan to cool the reflectors with like an S&P TD100 100cfm should be sufficient and they're damn quiet..but I might get the 6" model because of its compatibility with ducting and because I can tune it down..
Anyone think that first thing alone can vent that?
It's a 320cfm fan but it'll be hooked to a filter (probably a Can 50 so it has less static pressure) and will probably get 240 CFM.. the cab's will be 28.5 cubic feet only for the 250w veg cab (52"x36"x20") & the other will be 44 cubic feet (66"x48"x24") for the 400w flower cab..
The ducting and loss looks like it's gonna bring the fan on maxspeed vent down to like 140CFM..
Think that'll be enough for 72.5cu ft & 650 watts of light?

Sorry that's TL;DR
Here's an updated pic, and then an old pic where I was designing a way to use 1 fan w/ 2 boxes..


old one i drew lit some time and just found: