Welcome to the OC Club (I plan to join it later on this year) ..... OK Now, let's see what more you may need
1. As you migrate from moderate winter (3.3 GHz) to sizzling summer (4.5 GHz or more) - You would need some kinda cooler to keep your brains from gettin roasted & fried
On the Menu : Liquid Cooler; Robust Fans; Hydrogen Cooler etc...etc
Nada, I think a good air-cooler like the Noctua NH-U12P SE2 ~3900/- will be more than enough for OP, as this is his first over-clocking experience.
2. Now to keep your heart tickin even more reliably - you would need a "stable; efficient; consistent & heavyduty" pump
On the Menu : A Good PSU with 80% or more efficiency
A Seasonic S12II 620W ~4600/- minimum OR Corsair VX 750W ~7500/- for future over-clocking potential.
3. Lastly - your mobo has to be friggin robust & solid (to handle the whole show)
On the Menu : Sabertooth salad
Go for a ASUS P8Z68M-PRO ~9000/- OR ASUS MAXIMUS GENE-Z ~13500/-.
If you can wait for a few months, say end of April the Z77 series motherboards will come with the new Ivy-Bridge processor launch, they promise a nice performance increment at a minimal increment in price.
4. Finally - good quality bheja-fry from Noorani's
On the Menu : G-Skilled DDR3 1866
Get G.Skill RIPJAWS 1600MHz RAM modules will be enough to start over-volting.