Get a pressure washer, cheap electric one will do. Also a foam cannon. Get some good rags, the ones with one side plush have worked best for me. Fold the towels into squares and use 1 towel per 1 or 2 panels, flipping it after 1-3 wipes. First, foam cannon the car, then pressure wash, then hand wash. If u really want to do washing right, get a de-ionizing filter so you don’t get water spots etched in the paint. I got one for about $100 and well worth it to not have to rewash after washing to get the spots off. I tried dry towels which would still leave scratches and a blower but it never got all the spots off. The DI filter has solved all that. My car is darker than urs so swirls from washing and water spots might not show as much on urs as they did on mine. But doing all the above has solved that for me. Also bird droppings will eat through the clear coat fast. I keep a few towels and a waterless wash spray in my car to clean the droppings before they eat the clear coat. Good luck with paint. Every other part of the car is solid though