Hurmmm. I'd avoid the switchvox route and stick with the open source version. If you are just dieing to have someone to call when you hit a curve ball then I would recommend either Elastix or Druid. Both options will have someone you can call for support.

If you don't mind me asking, why the interest in switchvox all of the sudden? If you already have practical asterisk experience you will be better off sticking with your own servers and rolling your own stuff or using a distro. SwitchVox will be very limiting if this is where you are coming from.

By the way, I also hate Dells. SuperMicro or HP would be a nicer upgrade in my opinion. The former being my brand of choice.