Elk XC60 some questions?

Hello dear elk friends, My name is Thomas and I come from the beautiful Hanseatic city of Hamburg. We have and decided to buy a Volvo XC 60. Questions arise? The following is planned: Volvo XC 60 , roof tent, conversion 2. Battery Solar – Refrigerator The good piece should then always accompany us on short trips and on longer tours. The place should be enough because we are only two and will also stay. Here a few questions to be able to start with the elk purchase soon? Which Hä ndler in and around HH can you recommend? Has anyone ever had a modification of company XXXXXX???? for 2. battery u.s.w. made? Are there any problems? (place etc.) What delivery time would I have to reckon with with with new cars, and what is to be considered with a Jung-Needen? At present I still fluctuate between used and new cars? Does this also depend on what my Benz E280 brings? The D5 215 PS automatic should be bought. That should be enough for the first time. I am looking forward to numerous Answers and suggestions. A beautiful Easter Monday evening Greeting Thomas