Given that you're willing to shell out $1900 anyway and plan to work on video editing and stuff, I think I'd go with a Blu-Ray burner. It's only a ~$60 upgrade over the Blu-Ray reader + DVD/CD burner you have in your build.
^^ That's not true as a good quality 850W (eg. HX850) PSU would easily hold 2 let's say HD5870 because they (GPU Vendors) always seek better Perf. combined with less heat and power consumption as everybody is looking for the "Greener" choice now.
I've got the same mobo and ram. I would suggest selecting a different ram or a different mobo, because they seem to have some compatibility issues (see ocz forum). Also just incase you're going to be doing the hackintosh thing, you might want a different mobo.