Obviously, the more you post, the more you'll be seen, so every day would be key lol.
But as @sarrowsmith10 smartly pointed out, you have to be realistic with yourself. When your buffer is all up, will you be able to keep up the schedule, or will your readers lose you to the dreaded HIATUS!!!!! ?
I post one page a week. Despite the disadvantage of only posting once a week, that's just the best I can do at the moment.