I am under the impression that according to the Rav Kook’s teachings , it is better to be a non observant jew in Israel than an observant jew in the diaspora... I may be overstating what he meant, could you provide more material into this tought coming from his teachings . We would appreciate if He did tackle this subject, to give specifics, and if He did not, then what are the differents opinions on this matter?

Why choose? Is it better to eat a "neveila" or a "treifa"? It is required to keep all of the mitzvot incumbent on you including the obligation to live in Israel which is of a weight equal to all the mitzvot.