The FHO's are done often and the pups do really well with them! I was just at the specialist today with one of my pups and we had a discussion about them. My little guy may need surgery down the road and honestly, I will probably go with the FHO. I had a foster who had both hips done at the same time without any problems at all!
As for pj's, I would caution you to hold off on them until her leg is healed because the incision should not be covered. Actually, that gives you some time to find some pj's you love....you might want to PM 107barney .. she makes adorable pajamas and can embroider your pup's name on them. She makes them to fit!
Hoping for a speedy and uneventful recovery!