Several missunderstandings there.
First for the type of monitoring you are doing, LoRa is very likley to fast enough for what you are doing. Whilst you are assuming you need to send a 'lot' of data, you dont say how much. The Ra-02 can achieve an on-air rate of 37,500bps, is that not fast enough for basic monitoring ?
Second the Ra-02 can operate on different frequencies, channels if you like.
Third, the best of both worlds is maybe 2.4Ghz LoRa devices, can operate at 1300kbps, nearly as fast as the max the NRF24 can manage, but has the option of switching to long range mode where several kms is possible, distance record currently 89km I believe.
You could operate an Ra-02 and NRF24 on the same Arduino, but the devices cannot talk to each other.
Maybe tell us how much data you need to send and how often ?