a few questions about the equipment

Hello. I’m about to buy the Slam with 87 hp without a start/stop. I’m not sure about some features yet and I’d like to ask a few questions about it. 1)Is the Slam with 87 hp standard? In the 2012 price list it’s included, in the summary in the configurator I find nothing more about it 2)I’d like to add the spare wheel to it. Is the already small boot even smaller? 3)Is the tyre pressure control system recommended? Sometimes it’s considered good, sometimes not. Some complain that there’s a constant warning noise in case of a slight deviation. Is the system also deactivable? Because you also need winter tires that are suitable for the system, they are much more expensive? 4)I’m still considering whether I keep the standard radio or pay the 300€ surcharge for this intellilink. I’ve already read a lot about it here, both pre- and cons. I wouldn’t want to use it as a Navi, since I don’t have a mobile device that supports it. But I can’t use it for a new device or a new one.