Ok, after a quick dive into some research:
To anyone else looking for this info... a Meteobridge can be bought pre-built or you can DIY with off-the-shelf hardware like a raspberry pi (3, 3b, 4b) or a TP-link router. The cheapest possible solution to the problem I'm facing is a $140 ambient weather IP server (basically just a TP link router with the custom meteobridge firmware/OS). The DIY option is potentially cheaper (probably not), but you'll still have to pay $80 for the meteobridge license and $100 to upload to Ambient Weather.
The main reason why I'm interested is because meteobridge has built-in support for hosting and uploading a weather camera, which might take a lot of hassle out of the whole-station setup. Unfortunately, Meteobridge does not have MQTT support (but it does have MySQL support...), so for my purposes I will definitely be sticking to the WifiLogger2, and maybe I'll add on a meteobridge when I finally get around to adding a camera to my station!