Welcome, John. Inspiring story! Yeah, I've had a similar issue with helmet brims - if you are leaning forward you need to crane your neck backward a little more in order to see under the brim. A more upright seating position should help. What's you bike at home like? Do you like it? If you are renting a bike, you might want to bring at least your seat with you to make sure that you don't get a seat on the rental bike that doesn't agree with you. If you can, you might want to set up your home bike to your comfort and then find a rental bike with similar reach and stack measurements.

Best of luck.