I don't know about you, but I don't lay out my pajamas until I am ready to put them on or about to take a shower. I also don't put them on the laundry floor, ever. I think if someone might have ADHD, the floor is where they could end up in a hurried moment of distraction, and yet, the doorway? I think that is purposeful. You'd have to step over them to get in or out of the room. I think AM needed Blanca or LE to notice, but not too much, and he overshot the goal. I think the clothing by the shower was staged, too. I think the story it was supposed to tell is look at these clothes without evidence on them, and he tried to slip in a substitute shirt for 'ol seafoam, and the pants. I cannot believe a lawyer would leave the murder clothes on the floor unintentionally, or just hope that Blanca would wash them.
I think there is going to be a tale of a pre-nap shower and clothing change spun by the defense. I think A had a huge panic about the videos after the murder and tried to make sense out of the clothing switcheroo after the fact. I think he spent the 20 minutes at mom's getting in his head about the evidence, and then the trip to collect the gun from the house was his opportunity to place the jammies, etc, as well as explaining the GSR on his hands. If he planned ahead, I don't think he'd plan a bonus trip to the house for nothing- he could have just left the gun in reach at the kennels.
I think he worried about LE showing up while staging or GPS records putting him there, hence the admitted "trip back to the house." The only snag is why didn't he mention the shower to LE? Maybe he knew the clothes would mention it for him? He was pretty transparent in his effort to shape the investigation, though, and that feels a little subtle for him. Either way, he either took a fake shower or a shower he did not mention.
I think AM super-premeditated these murders and the videos and dogs were the wild cards that he could not control. Thank you Cash and Bubba!
Of course, these are just ideas of mine. Just spitballing!