I am about to purchase a bike for the MS150 next year. The MS150 is a Charity ride to raise money for MS that is, of course, 150 miles. It is across two days. The last bike I owned was bought from a super market and I know nothing of riding for such a long time. When I did a google search for bike information a ton of links brought me here so here I go. I am 300 pounds but hopefully will drop some of that before next year. I want the bike for the MS150 and to get around my town. My town is very hilly though they aren't very steep. The MS150 is broke into two days. Day 1 is completely flat while day two has hills ranging for slight and long to steep but short. What I know so far is that I want a roadbike as I am not inclined to use it on anything but pavement. I know I want something that is comfortable enough to ride for 70 miles no matter how long that takes. What brands would you guys suggest (In america looking to spend around 855USD or 560Pounds)? What bikes would you guys suggest? Because of the ride length I will be carrying some supplies like bottle, backpack to hold water (camelpak) and the like.