Adding a few bands, Dumbells, and a sandbag could be cheap add ins to give yourself more variety. Since time is an issue do circuits that press tempo and short rest periods. As far and "getting in shape" thats more of an 2 each his own view ya know. What do you currently do for your workouts? Average time? Hows the diet looking? Are you resting enough seeing as you seem to be a dad on the go lol. Hopefully others can chime in and offer you more ideas as well.