I would fix the paddle, keep it as a backup and get a Sho-gun. You will definitely notice the extra power from the bigger blades. Although I would personally recommend a Powerhouse with fiberglass blades. Yes they whittle down to toothpicks, but I have been paddling a werner with fiberglass blades for 10 years and have never broken one, nor have I seen one break. However, I have seen many, many, many Werner carbon fiber and AT paddles break. On the flip side I have to replace the fiberglass paddles after about 80-100 days due to wear. My 2 cents.
And for the record, Das-un-luva doesn't know what he's talking about.