You can't just go mixing programs together without having a full understanding of each of them (and even then, generally you wouldn't anyhow).
DC is very CNS intensive (hence the need for "blasting" and "cruising"), which is why you can only work out 3 days a week with it. HP mass seeks to minimize (or at least manage) CNS fatigue so you can train as often as possible (7x a week at least). DC makes heavy use of training to (and beyond) failure, HP mass never has you training to failure (except on your 3RM tests, which is very infrequently).
These two workouts are not compatible in any way, shape, or form. If you didn't feel that HP mass was draining enough, then go back and re-read the article. In it CT mentions some adjustments that can be made to it to make it more challenging .Though, honestly, if you are actually lifting the types of weights you should be, I don't know how performing 40 sets of pressing followed by 16 sets of squats or deadlifts, or 32 sets of squats and deadlifts followed by 16 sets of pressing followed by sled work doesn't feel like enough to you. You must have some serious work capacity.
Either that or pick a different program. But don't try to mix and match different programs together.