[Help]Aosp build over 17H and not finished...

Hello,
I want to build an AOSP flashable zip.
The tutorial i followed was here : http://ift.tt/21nLkZX
I have dualboot ubuntu 14.04 and W10.
The build is located on a other HDD than ubuntu.
The path is /media/kekzrieger/Disk1/AOSP
I had some issues regarding CCACHE with permission denied but i fixed it with http://ift.tt/1Y1cNhX the NTFS Partition tool.
Next when i had to setup the CCACHE for future easy compile i have these 3 lines added in bashscr
export PATH=/media/kekzrieger/Disk1/AOSP:$PATH
export USE_CCACHE=1
export CCACHE_DIR=/media/kekzrieger/Disk1/AOSP/build/.ccache <---is this CORRECT?
I dont know if i did the CCACHE DIR correct?
Next after i build the envsetup i select the hammerhead userdebug and do the "make -j8 otapackage"
I have i5 4460,8GB Ram,GTX 960 so -j8 is correct?
HDD WD Blue 1TB, 7200rpm, 64MB cache, SATA III <--- this is the build HDD

But the problem is the build is taking forever..
First time i tryed to build i did 3h and then accidentaly pressed stop combo on ubuntu.
Next compilation i had 8Hours!!!!! and not finished...
Then next day 7hours and a half ....still not done...

What did I do wrong?
Thanks for help!

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