I recommend that you get the RTX 2060 because it will use less power so it will easily work on a 550-watt power supply. Also, it is about the same price and has the same performance. However, the RX 5700 will probably work on a 550-watt power supply but you can't really overclock it. Therefore, I would personally feel more comfortable getting a 2060 instead of the RX 5700 in your circumstances. Especially, if you have a lot of RGB fans.