First of all, congratulations on winning the contest!
Now onto the fun part...shopping. A weighted vest can really kick your butt, even if there's only 20 lbs on it. In addition, lifting gloves are great for heavier weights. It doesn't really make much of a difference if you're using 5 lb dumbbells, but the lack of gloves becomes a bit more apparent if you're bench pressing 40 lbs. I have been using them for a long time now and I don't think I could go back to not using them without feeling unstable.
Don't get me wrong, 4DS has some great workouts—for both cardio and weight training. But, like Aquajock said, you should probably wait on it. Get the weighted vest and lifting gloves first. Then, next time you've got the money, get the 4DS workouts.
Hope this helps!