8 miles isn’t far. Are you dead set on a motorcycle? A scooter would work and be fairly comfortable (Silverwing, Burgman) but they get hate. I have a Triumph Bonneville and love it. Came from a Ninja 650 which had a more upright riding position than a sport bike. Honda also brought back the Supercub with a 125cc engine. Will get up to 55mph and pretty fun (wife has one).