It might work best - as it did for me - to find a bike that you really like and are more likely to ride on which you can purchase and change out the seat.
Some are wide and cushioned, some have gel, and others have features that might be easier to customize that would finding a bike that already has what you want.shopyourway.com/search/products?filters=availability%3A1&allowRedirection=true&q=extra+wide+bike+seat
I hope that helps! If you need help in the future, I can help you find coupons, discover lower prices and answer product questions! Click this link: syw.co/sywmakobi
then click on "Become a Client" button. I look forward to being your Personal Shopper!