from: 2733364116
to: 4294967295
channel: 24
decoded {
  portnum: TEXT_MESSAGE_APP
  bitfield: 1
}
id: 446884696
rx_time: 1746506398
rx_snr: -9.75
hop_limit: 4
rx_rssi: -113
hop_start: 5

I think all you need to choose SF is RX SNR at the other end.