I'd rather keep the first round the way it is now than draw it out over a period of days.
I spend an hour or so ranking players every draft, and my reaction to my results is always either "Yay, that guy fell to me at pick 10-30," or (rarely), "Bummer, all my top 10 guys got picked before my turn came." Maybe once, in all the drafts I've run since manual ranking came into play, have I thought, "Dang, I wish I'd picked a guy selected later instead of the guy I actually picked."
There's a danger in overthinking these drafts (not to mention diminishing returns).