Re: OK, next project...
1. I thought the price of the loom was much greater than that, so I would grab it quick, when I sold my loom for the CD only the price of the Eper was £183 or similar and nearly £350 for the DSP combined loom.
2., unsure, Niall is your DIY Satnav expert, but makes sense to do at the same time as the DSP save ripping out the interior again (however you have already done it once, but the back seat has to come out again).
3. IIRC there is a package of manual and parts disc for £6 which is good. Of course they are illicit copies and some feel uncomfortable about buying them (especially if working in IT), but they work fine, not had a duff one yet.