I have a linear recumbent bike . Looks a bit like a beach chair on wheels and has a long chain. I haven’t ridden for a few years because I live in an area with many hills. I’m in my mid-60s and have bike experience but again have not written for a bit. I’m looking for advice on converting this recumbent to an E bike. Should I start with a hub motor or should I just go to the med drive motor. And which motor should I consider. Thanks!