no dude i understand it very well. i understand it better then you.
what i dont understand is why the hell you bought smallest possible case and you try to fit in it full water loop including fuckin mb block using standard parts only w/o any modding
but most of all i dont understand why the hell you have ordered parts before you have reviewed all possible configurations with different parts and before you made proper planing of loop and now crying "you dont understand"
and no you have plenty space between your graphic card and front panel of case to fit ddc, Phobya DC12 or eheim hpps and with little more adjustment even d5 and a lot more then just one pump/res combo.
you can fit even
this but you have to mod case or make custom brackets.
get
this top make custom bracket and place pump vertically in the hole for long vga access. together with pump they are 48mm tick and you have about 52mm between end of the card and front panel. use inlet and outlet at square side of the top. this way you will be able to use retarded res w/o moding and dont forget that pumps work on push so you should connect parts with biggest resistance to pump's out side.
or if you going to use rotary angles like wrigleyvillain suggested dont forget to check their size and measure if they attached to pump will fit in hole for long vga access before you buy