In documentation Manuel Kasper says:

"If you want to be really happy with your wireless, then by all means
buy a real dedicated AP. hostap just never matches the performance
and reliability (not even under Linux) of a *good* AP, and is only
intended as a solution for people who absolutely need to do
everything on one box."

Well, i'm getting a couple of WRAP boards and Atheros CM9 mini-PCI cards to try an upgrade to
several Dlink 900Ap+ in a Wireless Community project.
Every board will have 2 CM9, one working in Access Point mode and the other one in Client Mode.

Will m0n0wall be appropriate for this?

I know that the primary goal of m0n0wall is to be a firewall appliance, but I've seen Netgate
selling kits like this, advertising:
"/Powerful 802.11a/b/g system, with excellent throughput and flexibility for best-in-class wireless
deployments", /and they ship this boxes with m0n0wall.

Do you recomend m0n0wall or some other distribution?

I've seen wifibsd, wisp-dist and a few others, but they seem to be broken or lacking support for
hardware, specially for Atheros CM9 based cards.
I try to stay away from proprietary and commercial solutions like StarOS or RouterOS.

Thanks in advance.
Carlos Rosário