This is what I've been doing for maintenance the last several months:
Monday: Total body weights (Muscle Endurance or PowerHour or MIS or SS)
Tuesday: 1/2 upper body + 1/2 cardio (1/2 PUB or PS CST or SS Upper body premix + 25/30 minutes of any cardio: MIC, IMAX1, IMAX2, KPC, SJP, etc OR...