A goal to make it to 165 Pounds.
If you kick your own ass doing anything (like ddr) make sure you stretch afterwards. It helps a ton. The first time I went to the gym I didn't stretch after and I couldn't walk for 2 days.
I stretch before during and after for DDR always have, the more "limber" I am the easier it is for me to do the split jumps and the 1/8th dance steps.