What's the terrain like? Are there many steep hills? If it's primarily flat, then based on what you said and if I were you, I'd go for it. If however there's a lot of hills in that 200 miles.....I'd pack a sleeping bag if I were you.

You DO realize that's averaging just under 14.3 MPH, for 14 solid straight hours. You should know better than any of us here, how realistically confident you are in your abilities to maintain that average, over that distance, for that timeframe.

Let us know how it goes, and be sure and take bus fare with you.

Good luck, and be safe!