Noob Question: Does this sound right?

Hey guys. So after querying a few agents, one wrote back and said they'd be happy to read my full manuscript if I could get my word count up. My current word count is 59k, but they wanted it to be in the neighborhood of 80k. They also wrote me a note about how for a first time novelist, it can be much harder to sell a novel with too low (<75k) or too high (110k<) of a word count. What do you guys think? Either way, I've already decided to count it as my first request for a full.

Now where is that dancing banana...

Thanks so much for the helpful info, guys! I really appreciate it. I think my main character is going to start making a lot of lists.

Again, thanks so much for all the info. I really had no idea word count was so specific, or specific to genre. I'm still not 100% sure how to categorize my novel. I guess I'd say commercial fiction? It's essentially a romantic comedy (more 40 Year Old Virgin than Sleepless in Seattle).