Is this a good build to last for some time

Hello, i was wondering is this a good pc for a new build, i will get a graphics card later as intel hd graphics is fine for now.
Also i already have hardrives.
i want it to last for some time (by that i mean be a quick and responsive pc) for 3/4 years is it worth it now or should i wait for haswell cpu's

Gigabyte GZ-G2 Gaming Case with 2 Front Fans
http://www.dabs.com/products/gigabyte-gz-g2-gaming-case...

Asus P8Z77-V LX Motherboard
http://www.amazon.co.uk/Asus-Motherboard-CrossFireX-Int...

Intel Core i7 (3770)
http://www.amazon.co.uk/Intel-3-4GHz-Processor-Cache-Sp...

CIT 450w Gold
http://www.amazon.co.uk/450w-Gold-Silent-Power-Supply/d...

Corsair Vengeance 8gb
http://www.ebay.co.uk/itm/Corsair-Vengeance-PC-Memory-8...

Akasa K32
http://www.ebuyer.com/290965-akasa-k32-intel-775-1155-1...

total price=£455.02