Any center we can acquire will either be a notch above scrub status or we will have to get very lucky. That type of talent out of the center position can be had either way. Sure, you can go and overpay a D. Jordan(if he even agrees to come) or a center of his caliber but that will only be incrementally better to a center that can be obtained after CP3. I will take CP3 and a center who is 5 out of 10 than Billups(for 1-2 years max) and a center that is 7 out of 10.
If you told me I could get D12/Horford or another stud at center instead of CP3 then I would have to take a real hard look. (I actually would take D12 in a sec)