Alright so this is what i've decided upgrade wise im getting a chassis, CPU Cooler and then some Ram
Chassis
Bitfenix - Ghost

-Looks nice and slick
-Silent which is perfect for music production
-Decent price tag (R1065) from Comx - Computers
-Comes with 2 Fans
CPU Cooler
Corsair Hydro H100i

-Great Cooler (Liquid)
-Looks slick and is silent
-Decent Price tag (R1380) from Comx
-Also its multi-socket compatible so when i upgrade my cpu etc in the future i dont need to purchase a new cooler
Now the question is...
A. Will this Cooler be suitable to overclock my CPU to atleast 3.0ghz? (Whats a safe clock ceiling?)
B. I current have DDR2 200mhz (Or something pathetic like that) Ram installed i wanna upgrade to atleast 8-16gb 800mhz Ram but I'am struggling to find any ram that will make up 16gb with my 4xDIMMs - So i wanna ask can my system possible use DDR3? (I've posted a CPU-Z text report up above for a list of my full specifications)
C. Finally any other upgrades that you guys would recommend?
Regards
Thanks for the Help @Enigma & @Morgue