i just have 2 questions regarding the PSU and SSD's
would it be a good idea to downgrade the PSU to 650-700W ? or should i keep it at 750W for future builds? and do you think i would really benefit from getting an SSD's? Because i've been looking to Samsung 830 90Gb and i dunno if it's worth it spending $100 in a boot disk
I would keep the 750W for future upgrades and possible SLI in the future. Will save you buying a whole new PSU in the future.
I would go for an SSD for your OS and games. Your boot time will be extremely fast and same with load times. There are cheaper ones too that are just as reliable. I would look into the Mushkin or the Crucial M4.