office to warehouse setup

I need to connect a warehouse to the main office. The buildings are 350 feet apart with unobstructed line of site. I have two WAP54G access points set in bridge mode. I've mounted two Hawking HOA14sdp directional antennae. One antenna is about 10 ft from the access point, the other about 35 feet. Both connected using LMR400 cable. The access points work fine when both are in the office but when connected to the antennae I'm getting nothing. I'm new at this so here's my questions.
1. Is this equipment adequate for the job?
2. Do I use left or right antenna connector on WAP54g or
does it matter?
3. How sensitive/critical is the positioning of these
antennae?

Thanks to anyone who can teach this old dog some new tricks.