IGARRET
I agree with all the options given. I generally go BIA to west of ORTAC along the west side of the airway and height is not a factor.
Bournmouth and or Plymouth Mil will give FIS and sqwark so one feels a bit more comfortable over the water.
A couple of points of benefit.
Call JSY ZONE 125.200 at least 10 MINUTES BEFORE (not 10 miles) the northern zone boundary.
If there is an easterly componant in the wind you will get haze and fish bowl effect so be aware.
Just after a cold front is the best time to cross as you will see the French coast or the Islands from Swanage.
SW winds and high humidity give us the fog problem. You will easily be able to get Guernsey or Jersy ATIS before you cross the English coast so you can make a decision then.
Do not worry about your routing once in the zone. ATC will take care of that depending on traffic.
Enjoy and come and see us soon.