When you pitch in your idea, they will interested in the plot twists, characters, the chapters (roughly) and the structure. So the word count will not be involved in the first stage. They would ask you for a blurb, synopsis, and 2 or 3 chapters if they are interested. And don't worry, if you get an initial yes, you will need to require so much revision (even the best writers do!) that you will eventually be adding the word count.
Do not discuss a lot with non-professionals instead surf for agent blogs, they are more informative, like Writer's Digest has a few good agent names, there one lady called rachelle gardner, google for her.
PS: There are novels, classics, that are shorter than standard 5 act plays. Call it a novella just to feel confident.