We're at 24' and your at 25' so at that length I'd be less concerned about getting stuck in bad driving predicaments and more concerned about the roads that simple don't permit vehicles over a certain tonnage. Maneuverability wise you'll be fine in almost any situation at 25' once we get used to it. Avoid gas stations or any entrance to a business that has a large dip or rise at the street to avoid bottoming out.
To help with routing on weight restricted roads I use the CoPilot RV app on an Android tablet. It routes based on RV weight and dimensions.
