Wow - a Labor Day challenge - that would make this my last challenge before my wedding! Agggghhhh!

Okay, so I ended just short of my Summer challenge goal at 183. And then my scale broke - SOOOO I have to move on to another scale. And this one doesn't like me quite as much - SOOOO I have to adjust. According to the new scale, I am at 186.0 (well, I was on Saturday, anyway). So that's the starting weight for this challenge. And since my wedding is Labor Day weekend, I'm going to cut the challenge a bit short so that I'm not focusing on weight loss during those last few days so much. Really, I'm a little afraid to drop too much over these last couple of months because my dressmaker's going to have a fit - but oh well! If I need to stop and maintain for a few weeks before the wedding, that's what I'll do, but I don't think that that will be an issue. ANYWAYS, start weight is 186.0. Today is day 1 - the end date is August 30, which is exactly 10 weeks. I'm aiming for 169 lbs. by that date. Also, I am going to include an exercise challenge, modified for my busy summer schedule. So here goes:
1. 169 lbs.
2. 3,000 mins. exercise (4x week at the gym - weights and/or cardio and one day a week incorporate activity into lifestyle - i.e. play tennis with friends, go on a hike, ride bike to store, etc.)