Point to multipoint

Hi.

I read on this forum for my problem, but I not found right answer.
I posted question on “hardware” but no help. So, I ask here:

How can I make point to multipoint system with big bandwith links? For example, if I have 15 locations with 2 megapixel cameras each link is 4-5 Mbps! How can I make AP for this situation? If I use 5 or more AP, I do not have enough channels!!!

When I say “how to make” I mean which routerboard(s) and miniPCI card(s) I need to use for AP.
Destination between clients and AP are cca 400-1000 m.
And, what settings is the best for real time UDP video striming? (UDP packet size, UMT…)


Thanks in advance.