I am going to get
Samsung SH-S222AB/BEBE 22x DVD±RW SATA ReWriter (Black)
Cooler Master Elite 430 Windowed Case - Black
Cooler Master GX 650W Power Supply
Samsung SpinPoint F3 1TB SATA-II 32MB Cache
Is it ok to get these parts now, and get the big bits all together near september or november?