>>1381360that ratio might be a bit high since it's uphill for a kinda long distance. as an estimate using the calcs below you'd need to put out over 200 watts to keep a cadence over 60 rpm on a 2.7% grade. the steepest sections would need more power or a slower cadence and speed. it depends on how fit you are if you can sustain it or not. maybe you prefer a higher cadence as well.
https://www.bikecalc.com/speed_at_cadencehttp://bikecalculator.com/ 