Thank you all for the responses. I would do the swap myself but not sure if I am going to run into a problem with the chain length and RD. Have had the rear wheel off and looked over a few videos, been a plumbing contractor for over 40 years so tools and mechanicals don't scare me. I would really like to do the job myself so I might just give it a shot. As far as the terrain that I ride. I have about 12% of my usual 15 mile loop that is flat. I have more than a few areas on that ride that Strava tells me are in the 11% to 14% range so the 36t would get used often enough to justify it's inclusion on my bike. I do have a three chainring bike, also a Cannondale Quick but the Black bike has the fork and the frame geometry and the fit and I just freak'in love it so I want to make that the primary and my go to bike. Dumb I know but I just feel like a million bucks riding that 3.
Thanks again for all the input. I might just swap out the cassette myself and see jut how much trouble I can get myself into.
Frank.