World of Alvarra: Rise of the Vampire Lord

Hey guys, I've written the prologue and finished a rough draft of the first chapter when I suddenly got stuck on a quandary. Should I write in first person? Third person limited? Or a mixture of both?

I'm asking this because I believe I can provide some better quality writing if I do it first person. But I've always wrote in third person. So many a mix of both is a good idea?

I think ether way I'll write in first person, or perhaps a extremely limited and deep third person. This poll is just to get everyone's opinions on the matter and to see if they have any advice. But no matter which option wins, I'll do the one that I think is best for my story.