This Rivera-Is-Lying thing is completely bizzare to me. What is he lying about, specifically? That he thought he saw Wendi Adelson with her kids but it turned out that it wasn't them? If he wanted to lie to get Wendi involved directly to reduce his sentence wouldn't he just say they talked to her and she pointed out Markels house?
The question is not whether Rivera in fact saw Wendi with her kids. The question is whether Rivera thought he saw her with her kids. Try to imagine that you are high on cocaine and you are in a completely foreign city full of white people, but you are hispanic and a felon and you are camped out in a wooded park for hours stalking your intended target. Over the course of two separate trips. And you understand that you are there to murder this man for "a lady" because she "wanted her kids back". And so in your cocaine-fueled anxiety, you happen to see a lady with her kids nearby. "THERE'S THE LADY!!!". Turns out, you were wrong. But that little detail provided exactly zero evidence against Wendi, whether it was her or not.
Add up all the things Rivera told the truth about that was later corroborated by police (money drop and calls with Katie, renting cars, shooting the Prius gasline, meeting the drug dealer in Tally and getting him to rent the room, the shooting itself, the stuff they did with the money, etc. etc. etc.) Those are a lot of details that are corroborated by other witnesses or other evidence. Ok. Now add up all the things he got wrong....and then ask yourself - was this a total made-up lie or is he mis-remembering some details or getting things mixed up between trip 1 vs trip 2? And then, does this inconsistency shave off any years from his sentence? No.
Now do the same thing for Wendi Adelson and Katherine Magbanua. Hell, even June Umchinda. Now, who is the liar?