Yes- a 36 or less REALLY cuts down on the revs in that range- since you are lightweight, if you arent riding very steep hills or mountains you'll have no problems- a 36 would take you up almost anything anyway-
I have a 34- a $30 investment that easily gets a 30 cruise, and the motor is starting to scream at 35, so I haven't pushed beyond, because
it IS a VERY PRACTICAL: hobby if you keep that approach in mind- I spent a couple of years finding out how I liked the bike- the bigger gear, 700c rolling wheels, bilet intake, perpendicular alloy handlebars, even a lighter better rolling 415 Trike chain- sound dampeners and a longer pipe
you can always go to a shift kit later, but try the basics first- build the "Chinese Junk" of motor transport
now I don't want to mess with it all that much- arthritis and tension- but I just save all kinds of miles and gas expense on the car. Happy Boating!