This may help you to decipher the OTO readings until your K2006 arrives: http://pool9.net/oto-chart/

It is fine to swim but if the chlorine is closer to 10 than 5 (since you have little CYA in there yet), I'd suggest wearing old swimsuits. Your pH is fine.

(I vacuum better when in the pool, too. Hard to reach over those high walls! )