Chenming makes both the Cheiftec Dragon cases as well as the Antec 8xx/10xx cases. All good stuff.
I have an older Antec version and can tell you that the backboard is not wide enough to get a 120mm fan in there. Front could possibality fit but you would have to do some extensive modding.
My suggestion is to punch the rear holes for two QUIET 92's which will fit fine. Leave the 80's up front. You don't need front fans anyway other than to blow on your hard drives, an 80 will take care of business just fine.
You don't need a wind tunnel, just a nice even low of fresh air to draw out the heat.
Ed