Just my 2 cents - Your realtor is a "successful and high producer".. we have one of those in my area and I have witnessed this guy that has a fairly large team under price at least 2 properties. One being on my sister's street. The seller had multiple offers on day 1. Hummmm... what does this tell me?
I reviewed this property myself, talked to the owner right before listing with "successful high producer". The long and short of it is this seller would have still received an offer and most likely 15K higher still within 30 days. The area is hot and not far from University of Florida, but far enough as to not be disturbed by rowdy students.
My suggestion is don't commit to this realtor, talk to others and get their input. Also, consider getting your own appraisal for private use. Not sure the cost in your area but I've paid 350.00 for one on my previous property and it was well worth it.
Keep in mind most areas are "sellers" markets right now.