You asked for opinions from the life experiences of many. There's nothing saying that you have to follow them, but the voice of experience has spoken. If they live great and if they don't then you'll have the experience to pass on too.
Good to hear that you're going to wait until your tank is running for a little while before adding them. As said before patience is the key to sucessful saltwater. Another thing that I heard often when I was first setting up my tank was "nothing good happens fast in this hobby"!
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