If you can, I would replace the Epia 800 with at least an M10000, they are much faster.
Also, don't bother with a DRU-100, wait for Seth's fm/am/rds device.
Forget an ITPS. They are rubbish, and I wouldn't subject my worst enemy to having to use an ITPS, let alone a loved one. Either save for an Opus, or get a Carnetix. These will allow you to sync files wirelessly with the engine off.
Good choice on a Xenarc.