I think if you cut the tips back and inch it would give you 5-7 lbs. But I wouldn't. Unless you plan on hunting bear it should be enough to kill anything in the woods with a good arrow. Also, if you feel like it shoots sweet right now, then the bow is talking to you and trying to tell you that this is how it likes to be. It may not shoot as sweet if you take its length down 2 inches. A nice long draw length and easy weight provide good arrow placement and that's what really counts. Just my opinion.
~~Papa Matt