Yes that's great; keep the connection as short as possible.  

 You'll have little to zero signal loss 💪 

 Based! 

 Antenna design/usage is an artform lol. I assume ones made by a reputable company have been tested for the band that they advertise, but no guarantees. If an antenna is a few mm too long or two short, RF gain starts to tail-off quite sharply. There are ways of testing using an oscilloscope but I can't remember exactly how to do that now. #LoRa