Urgent Equipment Advice Sought

I have just been presented the opportunity to do a sales job on including an AREDN package on a 200 foot tower to be part of an emergency services dispatch center.  My difficulty is twofold:  VERY limited time and not a lot of personal knowledge/experience with AREDN.  I suspect the tower will be three-legged.  What I have in mind is three 120 degree 2.4 GHz Sector Antennas and 2 backbone antenna - one link of approximately 6 miles and the other as far as possible (to an intermediary site).

​In order to ballpark cost the proposal, I could use some expert advice on:
​- what units to use for the sector antennas
- what units to use for the backbone antennas
​- recommendations on an interconnect harness
​- thoughts on powering the package from the ground (hardened site, not earthquake prone) or  solar.

I will likely be making first contacts within a week.

Thanks in advance,

Ian VA3QT
va3qt@rac.ca