I've been researching agricultural UAV's overall but im looking for the best benefits on potatoes;

I want to divide this post on 4 different topics that i have not been able to find on any specific site:

1.- best UAV: I believe we do need to consider several aspects:

        - fly at least 100 acres per flight (around 50 hectares for us at any metric system country :P) (heli or winged?)

        - probably be able to flt 100 mt + heights (to be able to take the least possible pictures at the best possible resolution, remember we are making desitions on this info)

        - be Rough enough to withstand harsh conditions (will probably be landing on dirt and such)

        - automated UAV for ease of use.

2.- imagery: basically which camera should we use?

        - i keep working around 4 different cameras: an RGB combined with a NIR to make NDVI analysis... a Multispectral (which i understand does the same thing but with better red spectrums) thermal cameras and finally DIY modified cameras (like GoPros)

       - which camera would do the job? is it worth it working with a camera worth a couple thousend of USD??

3.- Post flight software: i keep going back to pix4d but i find it so expensive so i dont know if agisoft is enough? or maybe look at companies like agribotix for analysis?

4.- real life Use and benefits: i believe this would be the best topic of all: can we really monetize the agricultural UAVs?

          - pre sowing work

          - during crop analysis (i believe a frequent fly would give enough comparison to take desitions based on this images)

          - real life scenarios in which you have beneffited from flying a UAV over your fields :)

i hope this discussion is not so extense that we have to divide it on 4 different topics but please advise...

BTW english is not my first language so sorry if i am writing something wrong :)