Camping on the Travers Sabine

Apologies if this has been covered in the past, but I'm struggling to find the specific info I'm after. Heading for Nelson lakes with intention to do the TS circuit with a night at Blue lake. Will be tenting, and trying to find out where there are suitable camping areas. The Travers valley is fine, plenty of flats by the looks and camping by John tait looks fine. But it's hard to see whether there is any clear flat ground near Upper Travers hut. I would rather not go direct from JT hut over the saddle in one day. The Sabine side I think is ok, Blue lake has a campsite and there's flat areas near Sabine hut. Not sure about West Sabine though. It seems most people stay at the huts from the trip reports etc. Not looking for any specific spots, just a guide as to where it might be ok for camping. Will likely talk to DOC in St Arnaud before setting out but if anyone can advise about camping near Upper Travers at least that would really help with the bigger plan and enable me to let others know where I intend to be each night. I've got plenty of hut tickets and would camp near huts if that's an option, but it seems they are not really set up as campsites, except JT maybe.