Buy Tomorrow Very Probably Collection Convertible

Moin moin, tomorrow we go for the test drive of a C70 Cabrios “Collection” with 2.4T, automatic, EZ 10/2004, 94000km. On board is everything you need (seat heating, cruise control, 901, E-seat and RTI (unfortunately?) etc.). Color combi is titanium with brown leather. Have read here already rough, what matters. I agree with the dealer in principle already, it depends now only on the Proefahrt. My open questions: Is it enough for the engine Super or does it have to be Plus? Would E10 be released? Are Windscho tts available (I’m not sure if there is one). If so, what does a used one cost over the thumb? Is there any software for the RTI halfway up-to-date or can I check it off in advance? Of course, I’m grateful for all the tips! Thank you in advance!