Just in front of the pond
There is a campsite straight north of Bradley Pond, on the herd path towards times-square. I think it is 0.3 mi from the maintained trail. Actually, it is about 50-100m north of the herd path. In summer, you cannot see it from the herd path, but as soon as there is a tent pitched there, you will see it. No dense trees to get through. From the herd path, you have a partial view on the pond.
There is another spot, as other mentioned, on the way to Times Square, but I think it was closer from Times Square than from Bradley Pond, so I would not recommend to carry everything up to this campsite. Yes it is feasible, but you would do in 1 hour what you would have otherwise done light in 30 minutes the following day.
Another thing re. the Santanonis: I suggest that you do Couchie first, then Santanoni, then Panther. Otherwise, you may end up not being sure you have enough time before the sunset.
In Winter, Couchie is typically 3 hours 2-ways, so between 2 and 5 hours (window of uncertainty is 2 hours). For Panther, it is between 45 minutes and 1h15, so 30 minutes window.
Not only it is safer, but it reduces chances that you will say "oh, I'm not sure we have the time, etc".
Also your stamina decreases during the day, you may not want to add an extra 3 hours for 1 peak, but chances are few that you would not go to Panther at the cost of 1 hour.
Another option is to split the group, with at least 1 strong hiker in each of the 3 directions, such that everyone breaks 1 trail and gets 2 already broken trails !!!
Hope this helps. Sorry that my message was as long as the cactus !
Charles