I agree with the others that you may have a fairly lengthy period of adjustment between the two goats.
Goats will be goats. Mine have all been together for four years and I still have to give them plenty of room to get away from each other, especially around the hay. Recently, my two does (mother and daughter) had to be separated at night because the daughter, my darling Isobelle, started to beat up her mummy.
I have a little Nigerian pygmy wether that is slightly disabled due to an illness. I thought he would not be able to return to the main paddock and pasture with his goat and horse friends due to his slight physical wobble-y-ness and a blind left eye but he made the decision for me and demanded to be put back in. He's been fine and is nearly completely recovered physically.
I know they use their horns to scratch their back but my goats has stubs. The Amish guy supposedly used some sort of acid cream to try and dehorn her. He claims he didn't leave it on long enough so now they're mess up and just these straight, pointy, dangerous weapons. Peaches loves to be in your lap if you sit down and sometimes she'll swing her head back and almost jab you in the face with them. Way too dangerous if she's a lap goat and she can use the end of the kong to scratch. Besides, I have my little cousins who come around to play with her and can't take the chance she will accidentally hurt them. My vet told me a scary story... when she was in vet school another vet student got stabbed in the cheek with a horn and it went through the students face.