If you are buying it in a couple of months, why not just wait till then? Everything will be cheaper, and more things will come out. But I will give you the best build for your current status right now.
With a few months to look at your build, research a few things
1) processor 3570K vs 3570 (k is unlocked for overclocking - will you want/need that feature)
2) Motherboard chipset; Z77 vs H77 (Z77 allows for overclocking, H77 does not)
Those are both performance related and should be considered by you in relation to your computer experience/knowledge.