[Twisted-Python] twisted application server

[coder_gus]

Hi,
I am in charge of writing an application server for a three-tier 
architecture system. It will receive requests&data trough an xml 
protocol agreed with the client devs. Basically it will work on a 
database and return the results to the client. The way I thought it is a 
twisted server accepts connections from the clients, a coordinator 
thread gets the request in a queue and pass them to free workers, which 
in turn upon completion will place the result in the thread coordinator 
response queue. The weird part is that another system places data in the 
database when a specific request comes in so I have to permanently pool 
the database for incoming data. This thing will be done with a pooling 
thread.
So, my question is: is this kind of architecture good to implement? 
(asynchronous server and threaded workers)
I might somehow miss some important details, but please feel free to ask 
questions.

Thanks.