[marginatus]

I'm from Azores (Pico) and the info i can add is:
About regulation you get for 14€ a licence that is valid for the present year. you can catch 5 fish/day/men and you can´t hunt "mero" (grouper) ephinephelus marginatus.
with your perfromance the dificult part will be to choose only 5 fish!!! on the summer there will be great pelagics near shore
Water temp will be around 25 in and out of water. humidity is high
a 5mm is perfect and spearguns from 90 and up. 100 and 120 will probably be the best. if only one to cary take de 110
about the traveling, you can get to know the islands with fairly cheap boat tickets between them and that´s a lot of km of shore to spearfish.
what will be more costly is to get there (airplain ticket)
people are very friendly and with great probability you'll endup invited to "adegas" to taste wine and all the other drinks or tho eat "petiscos"
A lot of fiestas in summer with good bands.

sorry for the desorganized reply and for the spelling.

it´s a great place to go as many other that you mentioned.
good luck with your picking (i wish i had decisions like that to make)

Fernando