But an in-home visit from new UCLA head coach Jim Mora on Friday has Rios expediting his decision making process.
On Sunday afternoon, the four-star called Mora and told him he wanted to be a Bruin, the first commit since Mora was hired earlier this month.
"I called Coach Mora and told him I was a Bruin and he was just really happy," said Rios. "He said he was excited to have me be the first to commit to him and to just keep working hard and to be ready to play for him."
Rios said the visit from Mora on Friday answered a lot of questions and confirmed with him that UCLA was his ultimate destination.
"Coach Mora, being an NFL guy and a defensive guy, that means a lot because he knows a lot about defense," said Rios. "And he seems like he's going to be a really good coach and UCLA is a building program"
UCLA assistant Angus McClure, who's been a part of the UCLA staff for the past five seasons, and who'd been recruiting Rios, played a crucial role in Rios' recruitment and commitment, as he has with many of the UCLA targets in Sacramento and the Bay Area.
"Coach Angus, we have a real close relationship and he was always recruiting me hard, way back since the spring," said Rios. "After Coach Neuheisel was fired, he was still calling me and staying in regular contact with me."
But he's planning to visit Westwood unofficially next month.
"My dad, my sister and I all got to see it but my mom hasn't so I am going to go down there again next month to meet the other coaches like Coach (Demetrice) Martin and so my mom can see the school," said Rios.
Rios said it was a huge relief to make his final decision, after being a longtime Boise State commit before he decommitted in mid-Fall.
"Just having it over and done with is a big relief, especially with me leaving early," said Rios. "I'm playing in the Cal State Game and then the Offense-Defense Bowl so then I can just relax and not worry about recruiting."
Rios said the new additions to the UCLA staff further added to his decision.
"Coach (Steve) Broussard was who recruited me to Arizona State and they were my first offer and he's a really good coach and a good guy," said Rios.
Rios will sign in February and enroll in-time for the spring quarter, so he can participate in spring practice in April.
"I know UCLA is where I'm going to be and in my gut, I knew that UCLA was home for me," said Rios.