I have about the same draw as you. In a Hill style that means you would want a 68" bow if it is straight or reflexed. You could use a 66" if it is a string follow (deflexed). This style of bow requires the length to match your draw length more closely than some of the others. In theory, a 27" draw should have a 67" bow, but those are harder to find than the even numbers, so round up. String follow allows you to reduce the length a bit.
I shoot a 58" Kanati hybrid and love it. I've had 60" and 62" bows and find no advantage in the extra length. If a bow is tillered and timed correctly and the grip fits you perfectly, it will be just as forgiving at 58" as anything longer. This relates to this type of bow at any rate (Kanati, Shrew, Lost Creek, Black Creek, Toelke Whip, etc.).
If you are talking a mild reflex/deflex, then you may want to go in between. In that style, 62" would probably be better.
Much of this depends on how you hunt. If you use a pop-up blind, shorter is better (easier at least). Out of a tree stand I have shot 62" bows with no issue, though shorter bows may give you a few more shot options. From the ground, either still hunting, stalking, or from a natural blind, I don't think the length is a huge factor. I've used a 66" bow from the ground and not felt inhibited by the length.
Okay, I guess that was a long winded way of saying you'll have to find what works best for you. Or you could be like many of us here and have several different lengths.