It would be interesting if the words from the different islands came from existing languages, for instance (and for myself) I would put French, Portuguese and English, to have the ability to understand how they get mixed
https://en.wikipedia.org/wiki/Most_common_words_in_English
http://french.languagedaily.com/wordsandphrases/most-common-...
Although languages like English and French are very close and have a lot of cognates already. Maybe it's better to take languages more far apart from each other.
English is closely related to these languages (in order of closeness): Scots; Frisian; Dutch and German; Norwegian, Swedish, Danish, and Icelandic.