everlast

Forgot to mention that I applied onshore and I am currently on my bridging visa.

Hi guys, I applied for my 189 visa in March 10. So far, I have provided all the documents needed. No CO has been assigned yet. The only missing thing is medical examinations. I have arranged HealthDeclarations early in March, I still have it in my immi account. My question is; should I go ahead and arrange the medicals now or wait until I get CO assigned? How long do the medicals usually last? Many thanks in advance,