Questions about buying a new Ibiza ST iTech

Dear Seat friends, I intend to buy a new Seat Ibiza ST iTech and have a few more questions about it:SEAT Ibiza Kombi (5 Doors) – i-Tech – ST 1.2 TSI (1.2 l, 105 HP / 77 KW)Special features: – Window lifter rear electric – Side windows from 2nd row of seats and rear window dark tinted – Xenon Light: Bi-Xenon light with curved light, daytime running light and rear lights with LED technology – Ultrasonic parking aid, front and rear – Headrest, third – Radio: DAB Digital Audio Brodcast ing – Comfort storage package – Winter comfort package – Theft warning system with back-up horn – Nevada White Metallic / Metallic Total price (including transfer): ca. 15,900 € (list price approx.22,200 €, without transfer?)Now my questions: 1) Do parking help and theft warning system really make sense? I’m not quite sure, but I promise myself a higher resale value by doing so. 2) Reserve wheel makes rather less sense after my research, right? 3) I had the SE AT4ALL insurance is considered, but would be forced to finance credit and KSB Plus contribution, the latter would cost an additional €1,100 (which would cost SEAT4ALL, i.e. liability + all-inclusive only €25 per month). Or would I drive better with cash payment and an insurance on the free market (I’m liability for 14 and partial cascade for 5)? 4) I definitely get the warranty extension (to 5 years), I’m still unwise about the inspection package. 13 € per month, is that worth it? Thank you for all helpful answers in advance