If I'm reading this right you're planning to take hCG during PCT, which completely suppresses LH/FSH secretion, which is the whole thing you're trying to accomplish with clomid and nolva. Don't take hCG during PCT, it belongs during the cycle.
Also, don't take both clomid and nolva. One or the other is more effective than combining them.
No way to tell why you had libido issues your last cycle, that's why it's so important to get blood work done. You could try lowering the deca, or adding proviron. Caber just addresses the symptoms, doesn't prevent prolactin from rising like people think it does. Just keep that in mind. Keeping estrogen where it should be is your best bet, and will also minimize the libido sapping effects of deca. I often cruise on 100mg of deca and 200mg test and feel fantastic with a massive libido, no caber whatsoever.