I would caution against booking any lodging or guides before you go - Atlantic Salmon fishing is a lottery whenever you go, but Canadian salmon fishing fell off a cliff this last two years :
http://www.glf.dfo-mpo.gc.ca/Gulf/asir/count?period=1031&group=1
in a year of cool weather and decent flows, that is a environmental disaster.
Ireland and Scotland were similarly poor. the one bright spot according to the ASF is the rivers on Englands North East coast - like the Tyne where hatchery fish were used to re kickstart the run - now some 31,000 fish run it each year - 20% hatchery, 80% wild.
https://www.gov.uk/government/uploads/system/uploads/attachment_data/file/383580/8804.pdf
compare that to the Margaree which had 77 fish in 2014, and you can see what your odds are sadly.
if you're visiting the area, i'd hit the salter brookies and sea run browns.
just my .02