I gave the Launch Edition a spirited test drive.....twice

It has 19" wheels. My HSE Lux has 20" wheels. I couldn't tell a lick of difference. The 20's do look slightly better but I can't say they ride slightly worse. I've had 20's and 22's on several 4x4 trucks in the past. I never had ride issues really and the tires in those sizes performed fine in all areas that an average joe finds himself in. But I choose tires wisely.
I think you're splitting hairs trying to decide between 19" and 20" wheels and ride quality/performance.
FWIW... I've left my current 2015 RAM 4x4 stock so far. It has 17" wheels with a much taller stock tire than comes on the stock 20" wheels.. The 17" wheel/tire feels and rides the same as my 22's on my RAM 1500 R/T......but it doesn't "handle" as well. But for normal driving I'll be damned if I can tell the difference. That's fine by me because I love the way taller wheels look... Within reason. Lol
I think you'd be better off putting your efforts into deciding what will be your next tire choice after the stock tires need replacing.
Good luck!