Hi Bronnie,
Can I recommend you look at the Hosted product?
As a bookkeeper myself it has all the full functionality you need from the Desktop product and it has the added benefit of the portability i.e. you can access it from anywhere as it is online.
Your current client though, will they still need to access their data or are you taking over 100%?
Kind regards,
Sally McIntosh (Sally@samsolutions.com.au)