How can yo build an e-bike with such a powerful motor and not have brakes? Even the second bike has rim brakes so I think even though you boast about the speed you can achieve you seem to have forgotten about safety.
1000 watt on a direct drive motor is not that powerful. It is likely to overheat going up a long grade. I like direct drive motors for their ability to do regenerative braking. I would need a 2000 watt motor to make it up the hills while pedaling were I live. Many people do this and limit the max speed.
geared hub motors are better for hilly areas but can't do regenerative braking or reverse because of the clutch. There are a couple of new geared hub motors out that can do regenerative braking. The one I am currently looking at has no clutch but uses the motor controller to put a small wattage through the motor.