I believe the bike you are looking at will work, but you will have maintenance issues frequently.

How about we ask you a few questions:

1. what is your target budget, and your absolute max expenditure? (you need a helmet too)
2. Given your commute mileage, how many miles per week do expect to log? (read weekend adventures)
3. What is the nearest major city?


Here in Seattle we have a cool shop that specializes in used bikes. They carry new too, but...
http://www.recycledcycles.com/sales.php

Not sure where you live, but you might look for a shop like the above.