I would also get 2-3 weekends out of a set of rotors and pads with the Cobra setup.
With Stoptechs I replace rings every 3 years as preventative, I have never had a ring failure. Pads I usually get 5-6 events / set.
The peace of mind for safety with not cracking rotors and boiling fluid is great!!

Daniel's setup with good rings looks like a nice alternative to Stoptechs.
Another alternative would be if you could find someone parting out their car and selling their brakes. The Stoptech calipers seem to last for a very long time. I have had mine for 8 years and about 40-45 events with no issue.