I will go for the Intel i5 3570K+P8Z77-M PRO option, Use it for about a week time(without overclocking) and if the temperature seams to be fine with the stock cooler, will stick with the same. But if temperature seams to be a problem, I will get a third party heat-sink and OC the proccy
Sure go ahead with that configuration but instead of immediately burdening yourself with the cost of a cooler, it will be better to invest in a thermal paste like --
- Arctic Silver 5
- TuniQ TX-2 / 3 / 4
- Cooler Master Thermal Fusion 400
- SVG Tech Thermag v1 [source from SVGTech.com Pune]
These should be priced between ~350/- -->600/- and should be available with the IT-Depot. Include this in your initial purchase and if the temperatures seem high, clean the cooler and apply this thermal paste. This should be your method of operation until you can get a decent cooler for over-clocking the RIG later.
Hope this helps, Cheerio!