I am expecting a massive traffic surge on Friday afternoon and it's perfect timing since I pointed my domain to my new server here. I am a bit paranoid I didn't do everything correctly. Can someone confirm this:

1) Went to my registrar approx. 28 hours ago changed the nameservers to ns1.servermatrix.com and ns2.servermatrix.com

2) Set up a ticked here at servermatrix telling them to add the domain to their DNS zone.

Is that all I need to do, or am I going to be out of luck after all the time has gone by? eg. 72 hours