I have a 30 year old GT Karakoram that I use mostly for paved path and dirt trails. Due to some health issues I'd like to do an econversion. I'm looking for a quality rear hub system with good pedal assist for hills and a decent battery life for 1-2 hr rides. I weigh 230 lbs and definitely want it to have enough power. I love my bike and don't want to switch and am looking for input on what the best rear hub motors, batteries, controllers , and displays are these days. Also, for my type of riding should I be looking at direct or geared drive? So far my research tells me a 48 or 52V, 1000 watt system would be good but lots of roads lead to Amazon, which I don't want to buy from.