"We want to made sweet low ABV cider" - Then you don't REALLY want to ferment straight apple juice. I would recommend making a "Graff", which is a low-ABV "malted cider". Basically its a cider that uses ale yeast and a small portion of malt extract to add some unfermentable sugars and to round out the flavor.
Here's a great read on it: http://www.homebrewtalk.com/f81/graff-malty-slightly-hopped-cider-117117/
I've done it before and it was one of the most popular batches I've made. It does NOT taste like beer at all. It tastes like a sweet, rich cider. Furthermore, its ready within 6-7 weeks, (as opposed to 6-7 months for normal cider) and can be as low ABV as you want really (although I'd stick to about 5% to keep it from being 'thin').