[App_rpt] hardware choices

I have 2 identical dual p3-500 boxen on which to run centos/*/app_rpt. Should I expect any problems running centos/*/app_rpt on these dual processor boxen? I'd expect one will support a quad radio port card and a tdm-400 with 3 green modules (possibly an arib board using 2 of those) and the other supporting a tdm400 card with 1 fxo and 1 fxs and sip termination to the pstn. this second box will also likely be the link by wihch the first sees the rest of the world. I do not forsee any other services running on these boxen. What can I expect from these as far as performance? what gotchas await me along the path to making this work? Thanks, Eric