Front Wheel conversion

Hi,
I've bought a 250W Conversion E-Kit from Cyclotricity, its got a smallish battery (36V/9Ah Bottle Battery) and has the peddle assist with LED display.
Has anyone used this kit before at all? I'm looking to commute to work which is only 6 miles each way with a couple of steep hills one each way. I'm only looking for assistance for the hills.