I understand that you are worried about releasing realms too early and are ready to do so come launch day.
From what I’ve been reading this past week there will be a wave of subs joining us. I recommend having two or more PvE and PvP servers for each location, pacific and eastern before launch in a low to medium population state. Once people notice that they are in a long que they will most likely back out and change servers quickly. It would be wise to have the realms ready prior to release so that they can be chosen immediately rather than it being a reactive decision on your part.
Again, I understand your stance on wanting to wait until launch to release more servers. That can still be achieved if the preemptive servers have gone high or full during launch. It would give you more time to release new servers and should reduce the amount of forum posts being created.
As it stands right now (I’m viewing the realm selection screen) there is one low pacific PvP server and one medium eastern PvP server along with no PvE servers less than full. This isn’t a good position to be in. I would advise releasing PvE & PvP servers for pacific and eastern locations this weekend prior to release.