Well as far as shedding goes. the tails are always the hard part for them. a nice soak here and there and some vegetable oil can help that. what is your substrate. i use cypress. and with my blues i notice one night they are about to shed and the come up the next day almost completely shed.

now about housing it with a sulcata. i really think this is a bad idea. there is way to many things that can go wrong. from stress to something as simple as maybe the tort steps on a toes, he puuls away now missing a toe. accidents can happen even if the do get along. sulcatas arent the most careful of creatures