is this hard to pronounce?

Da
We just found out we're having a boy! We have decided to name him Isaias. 
My husband's mexican and we live currently in Mexico, I'm just wondering if English speakers find this hard to pronounce. I'm Australian, which as a whole is a nation with very minimal understanding of Spanish. 
Has anyone known someone with this name? Interested to hear what nicknames you would put with this. Australians typically shorten everything but I hate the idea of calling him izzy or something like that!