Need swamp cooler recommendation / install.

[th3w01f]

We tried to get a quote on the Breezair systems but two places stood us up. It also may be difficult to install since they're only down flow. The other issue is it won't help with the bedrooms so we're still looking for a solution for those two rooms which is where the Mitsubishi unites came into play.

I"m wondering if it might be cheaper to add ductwork to the attic and put in a traditional AC unit.