People who do drugs stay up all night "partying". If Gary was there , could be Chris Sr was going drugs with him.(and who else?) Also explains why DR and her kids moved to new house, The older kids were likely used to the drugs, but didn't want the drug scene around the new baby. Or maybe the "scene" had progressively gotten worse.
The late nights and drugs could also be why somebody else fed the animals.
As far as the time w the mornings of the murders, the sister could easily have gotten her times wrong being upset and all. How can she put the child on the bus at 7, pick up friends and be at Chris's at 7.
I think that day everyone was really shocked, and maybe they didn't think about KR. Many times when tragedy hits, you see who is front of you and think of little else.
Even though I think way more of them were on drugs besides Gary.
If DS did this , I doubt he'd be the one calling 911. Many people have mentioned about, he called after he saw the pot. It was just his path, he looked to see if anyone else was dead in the shed. And yeah he walked out to the road, to get away from the scene or to look for on coming help, cell reception?
So much noise about 200 or whatever number of pot plants.. They could have been tiny seedlings.
As far as the cash paid for the new property,, many people do not trust banks, or at least keep some money out of the banks.
Just because it "looks" to a lot of people that they were poor, does not mean they were.
Likely Chris Sr was the main target with the most shots, others cause they knew who would have done it or who had been there.
Some have said a person on drugs couldn't have done it? Some types of drugs could have fueled this!
And, yes any family left would be afraid to talk if they did know.
JMO