I regularly split my upper and lower body for time constraints. I usually do cardio in the morning, and weights at night for 30-40 minutes depending on the tape.
Monday-KPC, Kick max, then at night I'll do an upper body weight workout. I try to start my week out harder, such as CTX upper body or PUB upper.
Tuesday- step. I prefer the Imax's Then at night I do legs, PLB or Leaner legs or legs and Glutes.
Wednesday- I try to do a fast 30 minute interval run. Then at night I'll do an upper body premix of a total body tape such as Muscle endurance, power hour.
Thursday- I might do step again or hi/lo. Then I might do legs. Although I usually miss one night during the week, so the 2nd leg workout usually gets booted.
Friday- I like to do a cicuit workout like bootcamp, drill max, HSTA.
Saturday-swim 1 mile at the pool. no weights.
Sunday- fast 30 minute run. no weights
Some weeks I might focus more on strength and just do gym styles for the week each night Mon-Wed, and do Legs or circuit on Friday. I hope this helps.
Mary