Good for you!!! I had piece-meal furniture, dishes, pots and pans...EVERYTHING. I was finally able to get new stuff for the first time in 35 years!!

I would try putting small catnip enhanced scratchers in the places they are known to scratch. You can also try heavy duty two sided tape (to hold carpeting down). Put it on all the corners of the new stuff. They don't like feel the first time they try to scratch and will avoid the area.

You can also put Soft Paws on them. They're like Lee Press-On Nails for cats!!

Good luck, girl!