early retirement is not an alien concept for any advisor who's halfway decent. I'm an advisor and I work with early retirees all the time. What's unique is the age that you're beginning your planning, but that's it.
Know going into this meeting that the advisor has this arrangement with your company as a foot in the door to you. Any investment recommendations (and know he won't give you specifics) are going to be based on what his firm offers. Also know, any questions you ask are going to be answered to get you to spend more time with him. This isn't a bad thing, just trying to set your expectations. Also know you aren't limited to working only with this guy/girl.
Your questions are good, but the comments are correct in that if you think you're going to get clear direction and a plan in place for such an ambitious goal as yours from an hour with an advisor, you might be better off educating yourself. Now, if you're looking for an advisor's expertise and for someone who will help you meet your long term financial goals through investing, asking your questions and meeting with this advisor is a good first step.
Reach out to me if you have any questions.