I'm NOT wedded to this, but it seems a good choice. I am totally open to other suggestions. I do want i7-2600 and I do want the z68 chipset, but I've no other preferences for MoBo.
The other wants for my system that I have in mind are: adding RAM (not sure about compatibility, but want at least 8GB if not 16GB), an SSD, an SATA Harddrive for storage, and a DVD reader/writer drive. I'd also like to add a modular PSU (80 plus certified). I don't have any major preference for chassis/case, except that I prefer mid-tower and I wish to go fairly cheap on the case (like to spend under $100 on this part). I've no great ideas about video/graphics card, I'd like one that can handle 1080p HP video, but otherwise am inclined to go cheap.
I'd love to keep the entire build under $900 or so, but I do have wiggle room.
If you want those two things then just get those two things.
The 2600 is overpriced compared to the 2500k, though. You will probably have 15 people tell you that before the thread gets closed the way this board is.
8 GBs of RAM will be fine. I am 95% sure that RAM with the part number CT2KIT51264BA1339 will work in the computer and it is 2x 4GBs and quite possibly the best RAM part number there is. Not bad priced too for $40.
Some good cases sub $100 are the Antec 300 or 300 Illusion, a HAF 912 or 922, maybe a Corsair 400r, a couple NZXT cases, or my favorite (the one I have) Lian Li PC-K59.
I would go with a HD6850 for the video card. It is an extremely good budget card or about $150ish. Most things that cost less have much worse performance compared to it.