I'm new to bikes and just bought an old Cannondale with these wheels. I understand that they were pretty decent when new, but how do they stack up to modern wheels? I am planning on running them until they break and upgrading to discs and tubeless. Is this a good idea, or should I buy some spare Cane Creeks off Ebay or Craigslist? Also, I was practicing bunny hops on the road today and noticed the rim bottoming out when I landed. How much pressure should I be running?