Certified GKH Gardening Expert
I fear that those temperatures will be a little too cold. You can grow these indoors, though. You will want to invest in a horticultural light that is rated at 200 watts or greater. This will be a way to get it to fruit indoors. I recommend LED's since they do not consume as much energy.
Here is an article for more information: https://www.gardeningknowhow.com/edible/fruits/pomelos/pomelo-tree-care.htm
This article will give you more information on growing these indoors: https://www.gardeningknowhow.com/edible/fruits/citrus/growing-citrus-trees-indoors.htm