ok 86 kg thats kinda easyweight.
as itsaqua mentioned you need dual motor , something starting from 2 × 1000 w
with proper front light for night, only you must understand that only few scooters can drive in heavy rain.
and if you want ride like 50 km per hr you need proper gear , i would say bike gear, helmet aprox 200 usd at least , glowes , 50 usd , also back protector , and kneel protectors , so you must understand that proper gear gonna cost you 400 usd atleast , so now your budget is less than 2100 usd just saying.