If this is transmission related, have you guys checked your ATF level? I have a 2019 OR and mine was underfilled by 1/4 of a quart. After I filled it to a proper level all of the rough shifting and clunking went away. Toyota's notorious for shipping these trucks (probably other models too) with...
Get Hikari LED bulbs, they have best ratings. I am running them myself and am very happy with their performance. If you're set on changing the whole headlight assembly then go with Morimoto full LED.
All of you guys that are having shifting problems, check your transmission fluid level. They all come underfilled and the dealers do not check them during PDI. My 19 was underfilled by a 1/4 of a quart. Once I filled it to proper level it now shifts as smooth as butter.
Nice truck. Have you looked at other trims? I bought my Off Road (fully loaded MSRP $41,200) for $36500. Don't let your emotions take over, shop around, visit Cars.cm and let dealers compete for your business, IMO.