Don't pitch kicks, IMO. Either use a kick that's already pitched, or layer some high passed topkicks over a pure sine wave sub, or a super lowpassed square or a triangle if you wanna get really crazy. Also be aware of what key you're in - certain sub bass frequencies are perceived better than others.

Once you hit D#1 or E1 on this chart, a lot of the audible tone of the sub itself starts to fade and become harder to hear - anything lower you'll also be struggling with controlling that sub bass when mixing. When you get to A#1 or B1, you're pushing the upper limits of the sub bass range and are losing a lot of that weight and power that you're looking for. Keep that chart in mind, both for your kick and for your sub bass.