Hi There
I've been snow kiting out the back for a few years .In my experience its either nukin or nuthin and if your lucky you'll get a day of pure magic 15 -25 kts clear and sunny.
The forcast is lookin like nuking for the whole week unfortunately (plenty of snow from Tues night onwards too

)but things might be settling down by Fri /sat with lots of freshies .
The lifties are OK with you taking your kite up to the top of crackers (if they ask tell them what it's all about )I usually just buy a one way $26 but if you just want to have a go take a bit out of your day on the mountain because you might get a one way and there is no wind (ask the girls at the ticket counter to check the wind or get on the net and see what the trend has been
I have always gone outside Thredbo boundaries up the valley on the way out to Kosi ,Top of Karels isn't too bad either but make sure you are well clear of the bullwheel.
A great spot is over the ridge at the top of the valley heading out of thredbo you head right following the snow poles to Charlottes .I would not recommend that you do this on your own and if you injure yourself if you go with someone else or a group its a long way back.
Have a good week
Cheers
Lach