1. It could be just about anything. People can have urges. Sometimes very bad urges, unfortunately. Bad stuff happens all. the. time.
2. I've wondered myself if RMA was using the A_S's acct. LE told KAK that they know for a fact more than one person was using it because the phrasing and way they talk is not the same person. RMA has ties to Peru and his daughter is the same age as KAK so maybe they know each other that way. Not saying she was friends with him (Doubt it!) but just being the same age could make you aware of someone. School? Places kids that age hung out? Knows a female relate? The daughters age being the same as KAKs is the only tie I've been able to think of for RMA and KAK. Otherwise, I doubt he'd know KAK who is almost half his age.
3. I can't imagine anyone giving orders, or him taking orders. Not over something like double murder. But I can imagine plotting with someone to get pictures for the dark web.
4. I do not think it was a crime of opportunity. He left the house with a gun AND a knife, maybe even more things than that in what may be a brownish fanny pack. If you're arming yourself for self protection when you go out you don't need both a gun and a knife to make yourself feel safer. It's either or in my mind if it's for self protection.
A say he had a knife as well as the gun for several reasons. The search warrant listed it (doubt they'd have interest in something they didn't feel was part of the CS), he was bloody, as well as the CS being bloody. I think the gun was used to get them to comply with DTH, but not actually used, as gunshots would likely have been heard and mentioned in MSM. It's my belief that the murder weapon was a knife.