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You could do a 120mm or 140mm AIO in that case, unfortunately it doesn't have enough room for anything bigger. The Cooler Master MasterLiquid 120 will fit, or most 120mm AIOs.

Clear the cmos.
Update the bios. Make sure they're in slot 2 and 4 (though this may not fix it.). 
If that works but 3000 is still unstable. 
Set the soc to 1.1 and dram to 1.35 and then try 3000. 

Clear the cmos, set DRAM voltage to 1.35v, set SOC voltage to 1.1v, manually input 3000MHz and the timings the kits are rated for and try to boot.
 
Also, might consider removing the picture as you can kinda see a good bit of your face.

Make sure you're simply enabling XMP/DOCP, and not just setting the clock to 3000Mhz manually. All the voltages and timings have to be just right, as well, which the XMP profile will take care of.