Hello,
I am working on getting a small campus of about 50 people wireless access in all the residences. I have attached a satellite image of the campus (the scale is in the bottom right, but its about 200m by 400m roughly). The red circles are the residence that need access, the blue X is where our internet connection comes in (main office block, wired network, file servers, etc). The green X is a library and reception, which is connected to the admin block via Proxim AP700s and 24dB directional antennas (overkill, but I didn’t set it up). Also worth noting is that the green X is the highest point on campus.
We don’t have a need for most features in RouterOS, we’re just looking to give everyone access to the internet in their homes. My initial thought was to throw an RB433 in the main office block (however the library might be the best spot since it is higher up), and point directional antennas in 3 directions. Then place more RB433s in the right spots across the campus in 3 or 4 locations. I thought I could use 2 miniPCI wireless cards on each RB433 with directional antennas to make bridges, then use a 3rd miniPCI wireless card for an omni-directional or sector antenna (depending on location) for laptops to connect to.
The other option I considered was to just use WDS and not worry about bridges.
I did see a lot of issues mentioned with only being able to fit 2 high powered miniPCI cards due to heatsinks, so I would have no problem doubling up equipment if need be. My biggest concerns are the fact that the left side of the campus is a lot higher than the right side (there is a dam on the right), and the number of trees scattered around.
Of course, this is just a rough outline of what I’m trying to do, but I hope there is enough information here to get some input from the community here as I try and tackle this problem. I am open to suggestions and appreciate the help 
