Hoping I get an answer regarding the ST2..I've had neck and back injuries which limit my riding to about 20 miles. I'm interested in the ST2 but it's labeled as aggressive with regards to body positioning. Can the rise of the handlebars be adjusted? Secondly, although I live in San Diego, California, my commute to work begins in the very early morning which can be very dewy. I have many rust points on my bike. Will the environment have a negative effect on an bike?