Ah, I dunno, I still think drop bars are more fun and versatile. All my friends who went with flat bars quickly outgrew them. I will say, too, that there are plenty of road riders at your weight or above. Don't listen to those people who say you can't ride the skinny tires - those things are very, very strong, and are built to withstand plenty.
Also...
Originally Posted by
qclabrat
If you want to upgrade to road bars later on it won't be hard to do either.
Not really. It's expensive to do this (think $200), and requires switching out more parts than what it's worth. Road bikes, on the other hand, cost a little more at first but are much easier to upgrade to your preferences, whatever those may be.
Just get what you want, and get what you think will keep you happiest for the longest. Then when it stops making you happy, upgrade or get something else.