Which Tyres?

Have you considered/ruled-out IRC RBCC?

They're the mid-point (sweetspot?) in the Formula range: Pro Light being racier and Pro X-guard having more puncture protection.

Some details that stand out to me:

• wider tread that doesn't leave the sidewall exposed on wide rims;
  
• true to size on wide rims;
  
• latex lining makes them repairable with internal patches (should reduce air loss too).
  
  

I specced some for the Isen I'm building, so should have IRL feedback in due course, but very durable according to Malcolm.