I am looking at the 7762 and 7782 units for an outdoor deployment of a single unit at our farm market. I want the range and weather resistance and capacity to mesh on 5 GHz to a couple 7363's, but don't need the high-density client features of the 7782.
Are there any other major differences between these two units besides the high density client handling of the 7782?
Keeping in mind your requirements then i would suggest go for Zf7762 and really interested in major difference then take a look at below PDF. it is self descriptive however steering MORE on the technical side.
Yes, 7782 would be a overkill so 7762 is good to go since other outdoor AP is ZF2741 which is EOL too and a single band and mesh won't work so among the options 7762 fits the best or you can put a indoor dual band AP in a enclosure as another option