Sugar-free mints or gum might not be a bad idea since sweet cravings can be part of the withdrawal process; interestingly the 'buttons' that get pushed by feeding the nicotine craving are similar to those that cause cravings for sugar, so the body can respond to nicotine withdrawal with cravings for sweets. Just something to be aware of in case you do have those cravings so they don't catch you off guard and derail your weight loss efforts. Sugar-free popsicles or Jello may also help if those sudden sweet cravings strike.
You may find yourself more tired during the first week or so (don't plan any mentally demanding activities during that time and make an effort to get adequate sleep) and you may find that you are hugrier or thirstier than usual; if you do, it's okay to drink extra fluids and feed your body and take it as a sign that your body has already begun the process of healing itself and is asking for more nourishment to accomplish that; just don't use it as an excuse to pig out.
Best of success to you!