i would recommend finding a way to sneak in a 3060ti into your budget, and would get a 5600x ryzen chip instead. performance in gaming is similar for both chips, and the 3060ti is a way better get that a standard 3060(use a dif chip)
for GPUs, EVGA is FAR AND AWAY the recommendation, when 3090's started exploding they by far had the best response, and customer service, and their warranty is known for being top-notch. Asus is another quality brand, and the founders editions are actually really decent if you get once at MSRP.(value for your $)
for motherboards, an decent b550 board that meets your requirements for nvme drives, USB a/c, etc is fine. look up someone like gamers nexus or jayz2cents and check out their opinion on boards, really want "narrow to 1", more like choose 2/3 different onces, and buy the cheapest option.
For PSU, use the linus tech tips PSU grading chart, and just get something with a good rating. Depending on if you are going to upgrade in the future or not, you might want to get something bigger than what you actually need to future proof as psu's can last 5-7 years no problem if you get something good. I would recommend getting something around 650 for the current build your making