Let it go, the release for the old Nostalrius realms are set in stone. 
You can either play there for a bit if you're impatient or wait another month for the fresh start to get an "even playing field" (let's be honest here, you won't be ahead of anyone either way). 
Neither of the PvP servers will lack a healthy population, that much is guaranteed by the massive amount of attention the project is getting and the number of accounts just on the stress tests.