I am also working on one Apollo App. Ptraco , We had thought a lot a lot and lot..
many many and many logos different approaches.. thinking and deciding on the
technology. Finally.. Apollo was the solution and here we go..
I have wrote many API's and base is almost done. No need to say..The UI is great!
Lot to do ..lot to do..lot to learn...
Details on http://sagarkulkarni.com/2007/07/23/first-air-application-way-to-build/
We are using OpenAmf for the server connections.