i gave my male dwarf up to my sister, who had the female, after he stopped eating when away from her (i assume he found his mate. lol) theyre livings still (i received him as a gift when i turned 16, 4 years later they are still alive, theres no telling how old they were when my sister got them from the pet store.)
so kept properly live quite a while.
im not sure about albino and regular but i dont see why not.
im going to be adopting the frogs back in a few months because my sister is moving and cant take them with her. id love to be able to take care of them but im moving soon as well and i already have a gecko and a kitten to look after while going to school, so before i move ill be adopting them out, most likely.
i really enjoyed taking care of them. the male frog "sings" at night, so be aware. its a beautiful song tho.
I use to keep them. For care sheets, just type in "African Clawed Frog Care" into Google, and you will get a ton of care sheet. Yes, you should be able to keep an albino and a regular together, they are the same species. It is no different than keeping an albino and regular Leo together.