Sat Nav + Multimedia in 3series Coupe

[motiv4]

So i am getting a new 3series coupe with the next couple of weeks but i am really torn between 2 cars!

One has the sat nav pro, bluetooth and few other extras that arnt much use (voice control)

The other is BASIC No nav no nothing!

I am Not sure weather this is possible or not, but is it possible to install and after market NAV /multimedia Combo of some sort in the 335d M sport Coupe? (it has to look the business, dont want it looking too tacky tbh!)

I am not sure if the list below is worth the extra 3-4k (diff between the cars)

Armrest. front with sliding adjustment

Bluetooth phone prep + telematics (prolly not gnna use that much)

BMW ConnectedDrive-Assist (?)

BMW ConnectedDrive-Online (?)

Elec Fold Exterior Mirrors (hm maybe i would find these useful?)

M light-alloy wheels double spoke 225 M. (prolly worth 500 extra? other car has standard)

Navigation-system Professional (no speed camera detection, cant play DVDs)

SA3 Pricing Rule for 620 Voice Control (pretty useless when was getting it shown to me)

Seat heating. front (awsome!)

Sun protection glass (aftermarket tints 50-100 quid?)

Voice Control (useless?)

[gizze]

335d M-Sport without the nav and bluetooth??

I wouldn't want it. The gap between cars with an without are bigger used, by about double, than they are new, it takes a car to get to around 5 years old for the difference to even itself out.

I would always pay the extra, you will get it back.