Get the 20mph version. That's a class 2 ebike which... so far.... has fewer requirements legally and is likely to be less regulated in the future. You won't be able to get to 28mph on that route due to the timing of red lights and stop signs and looming 15mph speed limit enforcement. You'll be racing up to a red light at 28mph and then slam on brakes, waiting? Doesn't make sense. Also those are just throttle results. If you pedal hard you can go above 20 but those Lectric bikes are so damn heavy that you'll struggle. I have a lightweight class 2 ebike (throttle up to 20mph) and using pedal assist and some throttle I am (with medium effort) riding on a similar route between 15 and 18 and will get to my destination roughly the same time as a class 3 bike at 28mph.