Is Patton cave the one at where saddle creek dumps into Monroe? That is a pretty neat little cave. I'd be in for that as well. It is not much farther then hiking to Terrell ridge/pond, plus there is ample parking at the horse camp.
I do not recall any "great" spots for a group to hang around the cave though. There is a largish pine grove on the ridge/hill top directly above (east) of the cave, or west of the peninsula trail once it climbs back up the ridge out of the stream bed. That is a pretty nice area, but you will likely get a lot of horse traffic if you hang right of the trail. Also depending on how much it rains between now and then, the water right around where Saddle creek dumps in can be pretty murky/mucky, depending on how you like your water to taste; you/we may need to walk north up the bank a ways to get “cleaner” water.
@ Rolloff I am still planning on being there, the only issue is that I must come back on Saturday (evening probably) because it is my daughters birthday on Sunday, that is the only part set in stone. Other wise it is dependant on whether I find a job between now and then, but I am planning on going on Thursday, I probably will not know 100% until the week of. If I do find something between now and then, I will be at least making a day trip to the area, just to hang out if nothing else so you will still have a ride back, assuming you do not mind coming back Saturday evening.