I would forget the Sat phone. Poor ratio Usefulnesss to $$$$
Real cost can skyrocket, if people chat.
If the boat has HAM or SSB, then winlink.org is a great way to handle reports to mum, at trivial cost.
Light foulies are sufficient for your crossing. I would not buy two sets. You can probably wear shorts all the way.
A good way to save is to get a good, longish heav duty rain jacket from a climbin store. (Eastern Mountain sports, Mouontain Equip Coop etc) They are good with shorts and wet legs.
I have been across twice, to Scotland, and never more more than that, despite having heavier foulies on board. (They are good once past about 50 North)
Beneteaus ar on the flimsy side for me, but lots cross OK. Do not tell you mum I said that.
I think you are well researched, and would go if I were you.
MUCH preferable to flying. (I am on a plane in a week, becasue we left Milvina in Scotland last fall. Home