You have all the important stuff on your list. The Schwalbe Marathon plus tires are just about bullet proof, so definately go for those if you want to put a lot of miles on. Don't go too wide even at your weight unless you're planning on mountain biking (obviously not with that bike). Something in the 1.5" range should be a good balance for all around neighborhood riding. Now go get the bike already! You've posted more in the last week than most members do in a year.