Welcome to the Forum.

The differences between the F6B Standard and the F6B Deluxe are the Deluxe has a center stand, passenger backrest, self cancelling turn signals and heated grips that the Standard does not. The B's stock seat is not set up for a riders backrest. The Utopia and Smart Mount backrests are made work with the stock seat with small modifications that are easily performed. Just behind the passenger foot pegs you will see small crash bars that do a surprisingly good job of protecting the hard bags in a parking lot drop or gentle low side go down. If you go down hard the cost of replacing the plastics will make the bike a total. For the seat modifications at 5'3" tall you will probably have to find someone local to modify your seat. Russel Day Long Saddles in Shasta, California or Rocky Myer Seats in Ojai, California are the only nationally known seat builders that I know of who will build a seat for your dimensions and they are generally booked several months in advance.

Good luck in your search for a bike. If you can handle a HD Electra Glide Ultra you will have no problem with the B, it has a much lower center of gravity, handles better and comes up off the side stand with a lot less effort.

Az Wingrider