That is a well though out opinion. I have a differing opinion about passing. When I tested this with 10 cars on track, passing was not all that difficult. It was not immediate in nature but there are places to set up and make a pass if you know what you're doing. I was racing with a group of guys that I have been racing with since the days of GT5p and we swapped positions on a regular basis. We were able to run side by side for entire laps and lose less than a second to someone running by themselves. We had to work our passes and a few guys were able to make up six and seven spots in one race. Our little group is pretty evenly matched, probably the equal to one and a half divisions in the middle of SNAIL for a spread between all of us.
As for my advice about picking a car you like and a track which is easy to pass. Based on my testing, I did that. Maybe I overestimated the ability of this group in comparison to this other group of clean, respectful, patient drivers.