As an SPG Plat, you'd also have the chance that you book the Suite, and get upgraded to Ocean View Suite anyway (which is what's happened to us every time we've stayed). SNA's also clear to Ocean View Suites if you have any?
Appreciate it's a risk you might not want to take - but worth taking into consideration.
Perhaps also wait until tomorrow to see if the StR Saadiyat appears for a Hot Escapes rate? Not sure when you're planning on going, but they do tend to have offers on at reasonable rates.