NIR and FLIR IR are not the same. Thermograpghy in Ag is in it's infancy and at present has many challenges that we are working through, reliable mapping is one of them. If I was you, skip the NIR and get a Red Edge or Sequoia and a Pix4d account.
The modded X3 works well. We used it for a bit before we moved on to multispec. We have the modded X3 forsale in like new condition for $1100 if you want it.
Dronebase has sent a fair bit of business our way, particularly to our Portland Or office. Always pretty easy to work with and they pay immidiately after the job is finished. Sometimes asked to bend the rules which we decline but all in all we probably average a couple of shoots a month with...