You should as ever seek the opinions of other users, but here is one view. The H8000FW does not currently do what you (and we) would like. In the past it has been difficult to interface external hardware to Protools – this is expected to change with the introduction of Protools 9.0, but obviously it will take us a while to take advantage of it. As a result, we do not currently have a plugin that will send audio to and from the H8000 as you describe.
Any DAW that can directly interface to Core Audio (or Asio for Windows users) can communicate with the H8000FW over firewire.
You may need to wallow in your misery for a while.
