what should i do

Solution
Full tower will fit all your parts easily and also you can upgrade parts in future without any trouble.

If you still have any doubts go to pcpartpicker.com and pick all your parts. it will tell you if there are any compatibility issues.
ok

so i building a new pc
these are my specs

msi z87 gd 65 gaming motherboard
asus gtx 780 ti
i7 4770k
corsair vengeance 1866 mhz 8gb x4
cooler master eisberg 240l prestige
samsung 840 evo 120gb SSD
asus bluray optical drive
windows 8 professional
corsiar 800 watt guk psu

is the 800 watt psu enough

i will be overclocking the i7 to 4ghz and the gpu also
 
MSI MoBos are said to have some problems. not very good review around

Go for Ausus / Gigabyte Z87 mobos.

did you say - 8 x 4 = 32 gb Ram ? i say its over kill. if you need more you can always buy more ram later, not needed now i guess.
 


is gigabyte GA-Z87X-UD3H good
 
Full tower will fit all your parts easily and also you can upgrade parts in future without any trouble.

If you still have any doubts go to pcpartpicker.com and pick all your parts. it will tell you if there are any compatibility issues.
 
Solution