You can easily get i7 within your budget,get it with eyes closed - it has no competition and really would handy for your work :)
Config :
i7 4770 @ 22k
Asus H87-Pro @ 10k
Kingston Hyperx Blue/red 1600mhz 4gb x 2 @ 5.2k
Antec GX 700 @ 4k
Seasonic s12 520 @ 4.2k
CM Hyper 101 @ 1k
Total @...