This morning I was able to remove the valve cover after slipping the wiring harness down below the valve cover, along the firewall.
Now that I have the cover off, I think I've identified the problem area, but would love to have some reassurance. When I first noticed the oil leak, the oil seemed to be dripping from the bottom of the thermostat housing, down into the intake valley, then off the back of the motor, around to the starter area and onto my driveway.
Bottom of thermostat housing/intake valley:
With the valve cover removed, it appears that the gasket was leaking just behind the dab of RTV by the timing chain cover (assumption is based on the fact that the mating surface on the head is clean in this area)
Does it seem likely that oil would be pushed through this are with enough force to cause a significant leak? Is there any oil passage that would possibly be above this point on the motor?