I design and build or rather used to....

I dont want your bounty but will happily offer up my 2 pence worth.

Not a concept i would choose, cooling is more complex than that....

How many servers are we talking? what are the BTU Raiting etc.....

How will air "flow" work around the space, will each server get enough cooled air

Why not free cooling??? just high speed fans in a small space and extraction can be enough on small setups.

Its not as simple as your question makes it