"Customized" server upload on your console is not compatible with Windy protocol.

If you don't want to have your computer running 24/7 to upload to Windy, then I recommend either investing in a Raspberry Pi which is very small (run headless), almost no power use, economical, quiet if you get the Flirc case, and very reliable. It can run Cumulus MX.

If that doesn't suit you then you could also get a Meteobridge as that too is small, is quiet, reliable but it is a bit more costly, although it is very powerful.