Ok you've provided some details of your rig, would have been better if it appeared under your avatar to save us from scrolling backwards and forwards - anyway your board has the same chipset as my own also graphic card so you should not be having too difficult a time with installation. Make sure you have latest versions of Clover, FakeSMC.kext and APFS file (the APFS file go into the drivers64UEFI folder) on your installation usb drive. Those things are mandatory to get you on your way to a successful installation. You'll need to add your ethernet kext, for this board use AppleintelE1000e, place the three kexts in 'Other' folder.
Now try the installation again.