You need JUST recommendation on a PtP to carry 700 users across the bridge, or you need indoor AP recommendatins as well? If you need outdoor, a pair of IAP-277s with injectors (if you don't have 802.3at LLDP switches to use) is all you need (no antennas, etc).
if you need indoor AP recommendation, you will need to prvide more data (size of coverage area, indoor or outdoor coverage, how big is the space, ceiling height, floors plans are best noting areas where you can install, etc.