Well I definitely think you have the right idea. I would continue to use the IQ tour as a control piece / benchmark ball, and I would assume you probably switch to the timeless once they open up. I would continue to slot out the third ball.
The only real gaps I see would be at the very top in terms of an oil ball, that would be something like a Crux prime or Halo solid. And then something in between your urethane and your timeless.... Like a match up, winner, hustle ink, or maybe a white hot badger.
Other than that, you got it covered with some good balls!