I am a 52 year old male looking for a comfort or hybrid bike that lies slightly on the off road end of the spectrum. My riding will consist mostly of joy riding on gravel and dirt country roads. I am looking for something with a relaxed/upright geometry because my lower back hurts when riding a mountain bike. My price range is 300-450ish. I would like front suspension and possibly a seat post suspension. Something with a wide range of gears would be good. My area is hilly. Steel or aluminum frame would be fine. A comfy seat is a must. Thank you.