Need some advice HTPC with 2*Corsair H70

Hi everyone, I am in need of some OCN advice

I am going going to build a HTPC / gaming pc for my brother in law and am going to use the following items:
- Silverstone LC17
- ASUS full ATX mobo
- AMD FX4100
- 2*2GB RAM
- MSI reference HD6950
- Cooler Master 720W modular PSU
- bluray burner
- 2 * Corsair H70 watercooler

So what I would like some ideas with is the following.

This is the case:







The I am wondering how to setup the double Corsair H70 setup. And maybe add cooling fans non stock in the case.

They will have to be in the spot of the right and partly left HDD cage. I am going to use only 1 HDD and maybe a SSD and only the bluray burner. So I can put the HDD in the spot of where the other dvd player could be and there is always room for a SSD somewhere.

Why 2* H70? I want to use one for the gfx card gpu.

Due to the issues of space I was thinking about the following: create an air tunnel. Put the two H70s on top of eachother. A 12cm hole in the bottom and the top. And let it suck air through the top or bottom and out the other way around. Let the 3 or 4 fans do the pushing and pulling. So the air doesn't actually end up in the case warm or hot and it doesn't use hot air to cool the radiators either. Do you guys recon this could work? I am kinda affraid for the fact it is two rads in a row and the fact want to use a dustfilter on the intake side because the rads might otherwise get full of dust.

Next to that I am putting 2 92mm zalman fans in the spots at the front (air intake). There are 2 80mm fans on the back (outlet). There is room for another 80mm fan on the side (intake) and I am wondering wether I should add another 12cm fan in the top above the mainbord somewhere or gfx card to suck out hot air.

Can you guys please comment on these ideas and maybe add your own different ideas?

What about the airtunnel idea? Will it work / provide decent cooling?

Yeah I also was struggling with the idea of the lentgh of both the hoses and the hd6950. It is those two together that cause the issues.

About the air pressure. I think if I can get at least 3 fans on tha rads (bottom, between and on top). I should be able to get some airflow going. And like you said from bottom to top. This would mean two new holes in the cae as modification goes.

Are you guys saysing I shouldn't do it? Or I should go for it and make everyone go: hmmmmmm how did he do that?

I am using a modular psu so les wiring and flatter wiring.

I just emptied all the old crappy parts from the case (say hello to mr IDE). The previous owner literally glued the cpu to the heatsink. I needed for only to get to the cpu itself and just pull the lid off the cpu. Hahaha I threw it all in the bin except for 3 pci cards and a 80mm fan.

I will do a mockup soon so I can show how tight the fit is and what options I have. But untill then please feed me with ideas.

Yeah a 92mm fan wil be right on top them.

sorry for the double post; do you guys think the case needs reinforcements if I create another hole in the side or bottom for a 120mm fan?