I second the idea of going directly to a bike shop. Online bikes have too many variables. Plus the shops will probably let you do a test ride. I found that what I thought I wanted was not actually what I preferred when I started test riding.

The one piece I will give some guidance on is with a weight load like that (I'm heavier too) you can't trust the ranges and you'll probably want more torque and a higher powered motor. This forced me into more of a dirt bike looking bike than I wanted, but it allows me to commute without breaking a sweat, which is big for me because I wear a suit somedays and business professional the rest. There are some newer bikes that give the power I got without looking like a dirt bike but they weren't available when I purchased.

If I had to buy another I would look at Aventon and Segway Myon.