Need home buying tips, any agents here, or anyone with buying experience? Long

The real estate agent is essentially double dipping. She gets the listing and the sale. Not sure if that is a concern for you or not? If you bought thru another agent the listing agent wouldnt get as much commission as it would be split? Not necessarily equally.
Call the town where its located and speak to Public Works mgr. Find out when water and sewer lines were installed/repaired last.
If its older than 50/60 years and still on original water and sewer lines, that may be a concern.
You could also speak to building inspector to see what permits have been pulled on the address to see what/if work has been done?
Good luck!