Nice choice, I bought the exact same unit and fitted it myself just two days ago
It really is dead easy to fit yourself, provided you have the right fitting bits and tools. (Torx 20 and 40 screwdriver bits are a must).
I just used Mikey's intructions on newministuff.com. The only thing I'd add is, if you're doing this for the first time (as I was), be careful when levering out the mirror switch panel. You need to lever out the whole switch assembly and not just the top plastic panel.
I have not fixed the microphone in place yet but I think I'm going to put it next to the rev counter on the steering column. I didn't want to put it on the sun visor since I have a convertible

In the mean time, the clip that came with the unit sits nicely on the wiper stalk, with the cable running behind the rev counter and behind the knee bolster.
BTW I think 10 minutes is a bit optimistic for a first time install, but I reckon the whole job took me under an hour.
Good luck