Newegg.com - Sony Optiarc Black 24X DVD+R 8X DVD+RW 12X DVD+R DL 24X DVD-R 6X DVD-RW 48X CD-R 32X CD-RW 2MB Cache SATA DVD Burner with LightScribe LightScribe Support - CD / DVD Burners
I recommend this burner over the LITE ON burner because it has some faster read/write times, and it comes with Light Scribe, all for the same price as the LITE-ON burner.
The PSU you have selected is Waaaaaaay overkill for the power draw from the rest of your parts.
Your system would probably draw less than 250-300w of power at full load and you picked out a Seasonic Gold 650w?
That Antec Neo 520w would tie you over, and this combo deal saves you money on the 5770.
Do NOT get a 790GX if you're buying a dedicated graphics card.
The only difference between a 790X and a 790GX is that the GX has an IGP.
If you're buying a dedicated GPU, you don't need the 790GX, 790X motherboards are generally cheaper and have all the same features aside from lacking an integrated graphics card.
Only $120 for a Good 790X motherboard.
Also, any particular reason you like the $90 Stormscout case?
That case would tie you over just fine as well.
As far as the HDD goes.
That's a very good choice, if you wouldn't mind losing 250Gb though, and shaving $5 off the price, you can get a HDD that's on average at least 10Mb/s faster.
The Samsung Spinpoint F3 500Gb HDD is on average 10Mb/s faster than the Seagate 7200.12 750Gb HDD.
You can buy one on ewiz or Amazon for $55 free shipping.
Also your RAM is fine.
With all the money you could shave off by making these changes you may be able to up your CPU to the Phenom II X4 955 or possibly up your graphics card to the 5830 (If you wait for that to release in a couple weeks or so.)