Weekly WOD and Challenge

I been trying to add different core work outs and bursts of HITS, to my everyday routine. My numbers aren't really budging, so obviously I have hit some sort of plateau. Pretty much over the last year or so, my numbers and body changes were something that occurred rather quickly. My body took on the muscle quicker then I had thought. Over the last week have added this routine to the end of each routine:

3 sets of 25

Overhead Medicine Ball Throws
Dumbbell Rear Lunge
Body weight Squat
Medicine Ball Jumping Jacks
Bicycles
Crunches
Mountain climbers
Inclined sit-ups
Jump box

I normally do about 30 minutes of cardio 4 times a week, after that I am dripping in sweat and ready to pass out.