Greetings: Your increased commute distance puts you out near reasonable limit for a bike commute. Also, over time, age will become more of a factor as your trunk size shrinks. Saddle to bar fit will change to a smaller size. Probably not needed yet, but for your next commuter bike, you might consider a pedal assist, electric. See if a dealer will loan one or rent one and do a trial ride on your commute. See if you like the time reduction and arriving fresher for your work day. Don