buy only tickets to your own team's games. They're going to be the premium seats which will cost more on a per-ticket basis, but you're not buying admission to a bunch of games you're not interested in. Apparently 12% of the seats are going to be specific game tickets. They're calling them "all access" passes. The other 88% of the arena will be the traditional all session tickets where you buy a seat for every session of the entire tournament.
There's no details on pricing yet, but you can join a waitlist to get your place in line now. There's no obligation to actually purchase tickets when they open them up. You can just pass on the opportunity to purchase.
Waitlist:
https://big12sports.com/sb_output.aspx?form=20