PC upgrade, budget Rs.25k (minus GPU)

I currently have the following pc-rig:

Intel Core 2 Quad Q9400 - 2.66 Ghz CPU

GIGABYTE EQ45M-S2 , Mobo

Sapphire Radeon HD 6670 GPU

2gb DDR2 Ram.

I am planning to upgrade atleast to the following with above budget, GPU not a priority right now :

1. Intel i5 3330
2. Intel DH87MC Mobo
3. WD 500 GB Hdd
4. 4gb DD3 Ram (already purchase from FK)

I am plan to use my existing Gpu as of now. Please guide within this budget . I also plan to play latest pc games like Battlefield, Titanfall 2 etc on this.

Fill up this questionnaire first:

1. What is the purpose of the computer? What all applications and games are you going to run? (Stupid answers like 'gaming' or 'office work' will not work. Be exact. Which games? Which applications? Avoid the word 'et cetera.')
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2. What is your overall budget? If you can extend a bit for a more balanced configuration, then mention this too.
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3. Planning to overclock?
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4. Which Operating System are you planning to use?
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5. How much hard drive space is needed?
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6. Do you want to buy a monitor? If yes, please mention which screen size and resolution do you want. If you already have a monitor and want to reuse it, again mention the size and resolution of monitor you have.
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7. Which components you DON'T want to buy or which components you already have and plan on reusing?
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8. When are you planning to buy the system?
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9. Have you ever built a desktop before or will this be done by an assembler?
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10. Where do you live? Are you buying locally? Are you open to buying stuff from online shops if you don't get locally?
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11. Anything else which you would like to say?
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