I am seeking representation for my novel, [INSERT AWESOME TITLE HERE], which is complete at XX,000 words.
Don't start with this. It's not the most enticing part of your query letter. It's the housekeeping part: the word count, that it's finished. Put it at the end. And you can leave out that you want me to consider this. Of course you do.
I want you to keep breathing, and have a long and happy life, but I don't start my letter to you with that.
~literary agent, Janet Reid, quoted from Query Shark