Wait for a bundle. I bought my i5 2500K and a better P8Z68-V motherboard as a combo deal at memory express at just over $300 versus the $410 you are paying for that CPU and worse mobo now. Wait for a good CPU + mobo combo sale.
Also goto
www.shopbot.ca and find the lowest price in Canada and price match @ MemEx always.
Nobody buys soundcards anymore. Don't you have an old DVD drive you can stick in? You don't need a new one. I haven't used the DVD drive on my new computer for an entire year.