[Freeswitch-users] calling card app

Hi As stated in some of my previous posts, I am writing a calling card system (not too sure of potential number of concurrent users yet). At the moment I am simply doing everything in a single lua script utilising mod_lcr and mod_nibble. It seems to work ok, but I have not stress tested it yet. I was wondering (at a high level) if this will suffice or should I be offloading operations such as pin validation and credit checking to another server (maybe utilising mod_rad_auth?). Cheers Raf