That's a great application for LoRaWAN, should have no coverage problems with a single gateway, as long as there aren't severe obstructions. An additional architectural decision to make is whether to host your LoRaWAN Network Server (LNS) on the gateway itself (some gateway mfg's offer this, not all), or remote/cloud. Managing your own LNS (Chirpstack, etc) is more effort than most realize so I'd consider a commercial LNS provider. The other consideration is that you'll have to decode the sensor payload once you receive it at the application level (LW doesn't define a standard sensor payload). Your sensor vendor(s) will be able to provide the info for that.
