I don't know what your fitness level is, but have you looked at SuperSets/PushPull? Those work outs may be a good next step. They were challenging to me when I first got them, but if you modify where needed and keep at it, you'll be able to keep up.
Others may have other suggestions, but I love those two work outs. They're on the intermediate side, but will definitely take you to the next level, if that's your goal.
anne