Well.. I think the best bet is to find a breeder in your area that might have a litter around the time your rat has hers, so she can foster the babies...
I don't know if the fake rat will work.... I think they guide themselves to the mom by scent and heat... and a fake rat will have none... plus if you leave mom rat with them they will go to the real mom and not the fake rat. What I understand about the problems with hairless rats is that their mammary glands don't work, so they don't produce milk... they will have the same motherly instinct as any rat... just that they won't produce milk. Also, I would be afraid of leaving the milk out for such a long time... Don't you have anyone that can take care of them during the day while you are at school?
When they are born, you'll have to leave them with the mom and check their bellies constantly to make sure that they have milk. Their skin is semi-transparent and you'll see a white spot on it... that's milk.
About the milk, you'll have to get KMR, kitty milk replacement, which is sold at petstores or with a vet, and feed them every 2 hours. With a damp cloth or paper towel, rub their genital area before and after the meal for them to pee and poo. I don't know if there are bottles small enough for
baby rats, but a dropper will do, just don't force the drop into their mouths. Let them suck it, cause if you force it you could accidentally drown them. They'll be furry in a couple of days and after a week and a half, leave some
rolled oats with them for them to nibble. I think that they open their eyes at 2 weeks, but don't quote me on that cause I haven't bred rats. continue to leave the rolled oats and put a water bottle for them, you can also leave cheerios and a bit of seed mix or rat blocks for them to eat when they open their eyes, but you still have to bottle feed them for 1-2 more weeks, just less... start feeding them every 3 hours, then every 4 hours and keep adding more hours between feedings till you completely wean them of the milk, but make sure that they are eating their solid food and drinking their water. Raising a litter is extremely hard work... your best bet really is to find a foster mom for them, so start searching and calling breeders around from now!