Honestly mate ,stick with peoples advice,buying the pentium now would be a foolish choice.
i3 minimum now for even a budget gaming build - a few titles released lately heavily rely on multiple threads,the pentium doesnt cope well & there are some titles it wont play at all.
Infact to me the pentium is an unimpressive chip anyway,it was rated highly as it can be overclocked massively but at stock speeds its not impressive at all.
to drag those speeds you need an aftermarket cooler & a fairly decent quality motherboard anyway which ups the cost.
I understand your choice to stick with intel ,the 860k was just another option which is very very god for the money (certainyl better than the pentium)
stick with the i3,squeeze whatever you can gpu wise into your budget - the 750ti will do ok at your resolution,still consider an amd r9 270 if you can get one in budget though - it will pretty much ultra any game at that resolution.