I can speculate a bit...
Water should be around 923 by Saturday which I think should have about the top third of the lot out of the water. You can probably get in, but the slope on the lot isn't real steep so you'll have to back in quite a ways.
Something to consider is when you get to that T intersection where you go right about 50 feet to the lot, is to take a left instead and then back down to the lot and launch.
You could pull straight out after launching and I think you could go up the road where you take a right and does that loop out by the lake. If that road is out of the water, and I don't know if it will be, you could bring the boat around to the back of that cove that the parking lot overlooks and beach it on the grass to load/unload.