Ah, as much as I'd like to be stranded anywhere with yesterday's post (Natsu), I'd also like to make it off said island. I feel that Sebastian Michaelis would be my best bet.
He's a supremely efficient demon/Butler so I feel like we'd be alright. He's an excellent fighter so I can be protected from anything. I'd gladly sell him my soul. :]
And he can cook so I won't worry about starving and he's super resourceful. :]
Also, super attractive so that's nice too. If I'm lucky, he will also come with a cat.