Is my old J&H Dandelion up to snow camping

Hope to get away for a night in the snow at Mt Stirling this weekend (wind is forecast to drop sunday) and wondering if my circa year 2000 J&H Dandelion is up to it. Not had a ton of use & always stored correctly. Serviced' by OnePlanet a few weeks back with +110g of new down + plus clean & new DWR treatment, so kinda back to original spec. Weighing in at 1.4 kg. Will be in a WE Second Arrow 4 season tent with S2S Ether 10 cm mat & 3/4 thermarest underneath and S2S thermolite reactor extreme liner for a few extra degrees