I can't make it this year, but there is a group from Texas Overland staying at Rancho Topanga this year, right around the same time frame.
They typically hit both parks and surrounding areas. If you're on facebook, look up Texas Overland if you aren't already part of that group.
I plan on heading that way next year between Xmas and NYE 2018. My goal is the NW side of the State Park and/or Black Gap WMA.