SSD, please help ???????????

Ok as stated in a diffrent question this is my current build on order to me; Processor : Intel Core i7-3820 (Four Core, 10MB Cache) 3.60GHz 1 Memory : 8192MB (4x2GB) 1600MHz DDR3 Quad Channel Hard Drive : 1TB SATA 6Gb/s (7200RPM) 32MB Cache Optical Drive : DVD+/-RW (Read/Write) 24x Graphics : 2GB... show more Ok as stated in a diffrent question this is my current build on order to me;

Processor : Intel Core i7-3820 (Four Core, 10MB Cache) 3.60GHz 1
Memory : 8192MB (4x2GB) 1600MHz DDR3 Quad Channel
Hard Drive : 1TB SATA 6Gb/s (7200RPM) 32MB Cache
Optical Drive : DVD+/-RW (Read/Write) 24x
Graphics : 2GB GDDR5 NVIDIA GTX 680
Operating System : English Windows 7 SP1 Home Premium (64 BIT)
Sound : Integrated HDA 7.1 Dolby Digital capability

Monitor - Samsung S24B300HL 23.6 inch Widescreen LED Monitor - Gloss Black (1920 x 1080 Full HD, 5ms, HDMI/VGA)

Do i REALLY HAVE to get a SSD or will i be ok without one, plus i dont really want to spend anymore money as this had cost me nothing short of £1800, plus with it coming would it be worth getting a SSD of amazon and the fitting it when it comes so its on a fresh system instead of me booting everything up and then backing up all data, or are the somewhat "plug n' play".

Sorry if this makes no sense im just really busy with other things lol, any he;ly/advixe would be great. Thanks in advance !
4 answers 4