I'm pretty much doing the exact same.
Home Assistant
Custom TX board to transmit to the Etekcity sockets
https://www.amazon.com/Etekcity-Wireless-Electrical-Househol...
Using Alexa to control those outlets via Home Assistant Emulated Hue component. Then I have a couple groups defined in Home Assistant for my living room lights, so I can say "Alexa, turn off living room lights" and it'll turn off my three outlets.
I can also do "Alexa, turn off living room light one" to just turn off a particular light.
One thing that I've noticed with Alexa and Home Assistant is that I have an outlet labeled "Xmas Light" and I can either say "Alexa, turn on Xmas Light" or "Alexa, turn on Christmas tree light" and it seems to discern between the two.
Overall I love this combo and is working pretty dang good.
Next goal is to use PIR sensors so when I go to the basement it'll automatically turn on the basement lights.