I have been looking around the web to find an inexpensive aprs capable weather station kit. It seems to me that the only options are the FD-WX1 from Fox Delta and the µWeather from RXComm. The FD-WX1 looks like a nice kit but it's not currently available and the µWeather is not a kit as they only sell the bare PCB without any parts.
More on some IC-7300 features
2 hours ago