I am new to electric bikes. I am looking to build an electric bike for a dedicated purpose, on a budget. Basically, I would like to use the bike to access my garden down a trail, which is about 1/4 mile long. Most of the trail is level. But, there is one hill that is about 100 foot long. I dont care about range, and I don't care about top speed. My concern is getting up the hill. Are there any motors available that will get me up this hill without pedaling? If I prune some trees back, I could probably get a 30 ft run on level ground to gain some momentum before I hit the hill. It's the kind of hill that I could pedal up if I had to. But, after working in the garden for a while on a hot day, I'm not gonna feel like pedaling. I am very mechanical , and I do not mind doing custom work.