Oil leak from rear of engine, Valve cover? Half moons? Both?

I have had an oil leak for about 6 months now and I have washed it down multiple times with degreaser and watched it to see where its coming from so far I'm still unsure of what it exactly is. So far i have come up with it being the Valve covers and maybe the Half moons to. I know its not the rear main because its coming from higher up on the back of the engine. Tired of smelling oil burning on my headers so I was planning on just replacing both but wanted some input from other people before I go ahead and pull it apart.

 

Valve cover gaskets. Mine have been leaking for months and haven't had a chance to replace them. That looks like the same spots where mine leaks. Dealership told me mine was VCG

 

Thats what I thought, wonder if its worth doing the half moons while the covers are already off

 

Might as well. Bought the seals from auto zone for like $40 with spark plug rings too.