Are you going wait on electricians until the interior walls are framed, or will there be a couple of stages of electrical work? I'm thinking of some of those out of the way places where plugs can be really handy but that may not appear on your plans since this is prefab, but would be really useful.

Three years ago I had a windfall that I dedicated to having some junction boxes installed or moved. In the hall, on the front porch, and in the front room ceiling for a fan and light. They tapped into existing lines, but ideally these things are all put in place before the wall board and ceiling goes up.

In my office they installed a double size box on the wall I thought I'd use for the computer. Four plugs in one spot. I've since moved the computer, but those four plugs are on the wall where I now have the sound system and I make use of all of them.

SRS