Purchase advice

Hello together, I’ve been driving an Audi A6 2.7 TDI for almost two years and now have 120,000 KM on the clock. I’m playing with the idea of replacing my car with a V70 T6. The background is that the T6 is also available as an LPG gas retrofit. My question: Has anyone of you already had a T6 converted to LPG gas and what are the experiences? Then I chose the following accessories: black leather comfort seats in soft beige LM Felge Venator 245/40 R18 Dark Fineline Fahrdynami kpaket Fahrassistenzpaket Familien Package RTI Navisystem Safety comfort package Driver and passenger seat electric Goggles holder for driver’s seat Parking aid front and rear Failure of engine designation FSE with Bluetooth headphone outputs and individual source selection Middle arm back DVD player rear Audio package High performance TV receipt digital wheel nuts lockable Sliding lifting roof side window rear and rear window darkened Standing heating Since I have no experience with Volvo ha I’m not sure if I have all the “must haves” with me or if there is something else that has to be installed in a V70. Now I’m looking forward to the offer from my dealer. What makes more sense with Volvo to lease the car for three years with 180,000 KM or to buy it. Which variant can you get more discount from Volvo? Maybe one of you also has an experience worth it. Thank you very much for your tips and a nice day in advance.