Hmm, do you want my honest opinion? Just go all out and get the Super.
220BHP of sheer V6 power!
If of course you don't wish to be selling kidneys in order to afford the running costs then do not get one,
To be honest, the Phone sounds pretty pointless in todays world where a cheap 'Carry In Car' mobile can be picked up for less than £30. Same goes for the Sat Nav, I don't think it's supposed to be very good on the 166.
Might be wrong though.
You'd be better off buying an aftermarket phone and sat nav anyway, as they WOULD be better.
What you really need to look for when wanting creature comforts on a car is stuff you can't really add yourself. Such as Cruise Control, Climate Control, Heated Seats, Electric seats, Leather seats, Electric Sunroof, etc.
I think the 166 was pretty much Alfa's prestigious flagship model anyway, so believe that most come with all of the above mentioned.
But seriously, do give the Super a thought, 220BHP???
Good luck mate!