That particular hill is 240' of incline over 0.9 miles. Angle of elevation is 26.7°
I have two other routes, all about 3.5-4.5 miles.
It's uphill any routes, the others are more forgiving. This one is just the most direct.
Discussion
That seems more like a 5% grade (240/(5280*0.9) * 100) which is much more manageable. Even with an ebike you are doing some of the work, and I figure any ebike should support this.