I'd go with Win7 Pro(sorry.. make that I went with Win7 Pro!! ) .. I found a few of the extra admin features I use all the time(I think $150 or so for the OEM version)
Macca's idea of forgetting the BlueRay burner makes sense, intially at least, unless you think you may ultimately want to burn to BR discs that is.
I got a seriously cheapo graphics card(I'm not a gamer either) and it runs both of my two screens, a 24"@ 1920x1080 and a 17"@ 1280x1024 at the same time with ease.
I watch the odd video every now and then too(not much tho).
They say men can't multitask.. but give' 'em two screens and watch them fly, I say! I'll have three or four apps running concurrently and continuously(or so it seems). made so much easier with dual screens tho.
Mine cost about $70 and is a Asus 1Gb ENGT 220(low end in the Nvidia lineup).. you don't need that much graphics power for photos and videos.
if you drop a few hundred here and there(easily done with your specs) you could easily set yourself up with two screens too.
If you go with the LG W2353 screen(I have the W2442, 24" as my main screen!!) plan to get yourself a calibrator too!
You may seriously need it. The difference between the default setup of the LG screen and how it subsequently looks when calibrated to match the older 17" screen is startling!
I stupidly purchased a Syder3 Elite.. for the software, but it turns out that the software is barely acceptable. I subsequently got BasicColor display which calibrates them a lot better.
The Sypder software does a much less efficient job of calibrating the two screens properly. It seemed to do one or the other ok, but setting the correct Gamma was an exercise in frustration.
Once I learned a little about BasicColor4.. I was sold on it.
The beauty of the basicColor software is that it will calibrate with just about any hardware calibration device.. Spyder's, Huey's and so forth. And I think you can purchase the BasicColor software with a hardware device, so saving a few dollars in going the integrated route.
Also, I'm not massively into Office type applications, so I never thought to bundle a cheaper Office suite into my purchase, but I do need access to various Office file formats and be able to create them for others to use too.
I tried out OpenOffice, and was very impressed at how well it handled MS Office files(so far), I resent various edits of Office file formats to my sis(who uses Office 2010) to confirm OO's ability to handle MS's file formats and she was happy with them.
My only issue with not having MS Office is that I can't sync entirely with my old PDA(WM2K3), and I haven't found any way to sync the PDA to OO. It syncs perfectly with the PC and I can access all files on the PDA, but I continuously get an error message that no associated email program is available(for the PDA to sync too). I don't use the PDA for emails tho.. the error message is just annoying.
Finally. make sure that the case is user friendly. Antec!! .. I got a cheaper but very cool looking case with huge 40cm side fan(for super cooling on the cheap )... and it blows a gale onto the hardware.. keeping it very cool(in my about to get super heated study(I have no ventilation )
Problem is that the case was designed by monkeys on hallucinogenics!! adding hard drives is a pain in not only the bum, but on the fingers as well. Coming from a series of Antecs, who's hard drive bay designs were a pleasure to use, this Aero Cool case is a pile of junk. I now have all hdd bays filled. Not all drives are connected, but I don't want to go through the ordeal of adding a hdd to this case again.
(actually it's nto that bad as a case.. pumps a lot of air through itself, and once setup, is more than acceptable(9/10 in fact).. just adding hdd's is so painful, even when empty!
I should have spent the extra $100 on the Antec!(live and learn, I guess).
I'm not saying that you will be looking to add any more hdds into any PC case, but if the need ever arose, and the case was badly designed.. you'll regret it(then).
anyhow.. just a few other thoughts to share.. before you totally commit.
Just remember as you take more and more photos, and start filling the hdd's with 1Tb of images in 2 or 3 years... that Antec case will be an extra $100 that you'll be happy to have wasted away