c'mon, where's your sense of adventure?
got dental coverage?
an ortho on call?
Some tubes will last 20 years, and when they go, you slow down and change them.
Some tires will last 20 years, and when they go, it's a crap shoot on avoiding mayhem.
I'd prefer to see a few more of your builds before you wipe out, eh?
BTW, identical RB-1 to yours is for sale here, $500.