But a trip out West on Monday made the decision easier for him.
"I visited UCLA on Tuesday and got a chance to see the campus for the first time and it was awesome," said Mustoe. "I committed to UCLA on Tuesday night. I told Coach (Bob) Palcic and then told Coach (Rick) Neuheisel and they were pretty fired up."
The commitment from Mustoe gives the Bruins their second offensive tackle commit, joining Lakewood (Calif.) tackle Torian White, who committed on Saturday.
"They want me to play tackle but they haven't said right or left yet," said Mustoe. "It's a great opportunity for me."
Mustoe said he was leaning to going out of state, and when the Bruins offered earlier in the spring, his attention started to shift to them. Now, with Colorado joining the Pac-10, the opportunity to play in front of friends and family is greater.
"Oh yeah, that is really cool getting a chance to come home and play Colorado," said Mustoe. "I was leaning to leaving Colorado and going some place out for school."
Mustoe said it was important for him to decide early.
"I wanted to be able to focus on my season and year," said Mustoe.
An incoming freshman with the Bruins is a friend of Mustoe, Colorado native Kip Smith.
"I know Kip from Legacy when I was there for a time," said Mustoe.
All told, Mustoe is thrilled with his decision.
"I'm excited about going to UCLA and playing there," said Mustoe.