Have you ever paddled that area before?
Local knowledge is always best. So I defer to Jules recommendations.
One source that may help is Coast Pilot 4
http://www.nauticalcharts.noaa.gov/nsd/
coastpilot_w.php?book=4 . It can provide some general information about the waters around the area you are interested in.
Another site that may help is:
http://tidesandcurrents.noaa.gov/ Here you will be able to locate some current and tidal direction and speed information for the area. May help with your initial planning for the timing.
Daniel