I can certainly sympathize, my Noelle was a real little devil at that age. She got into everything! She shredded toilet paper, well, any paper, she'd knock everything down that wasn't nailed down, she used to climb up curtains and the sides of doorways, she used a potted plant hanging from the ceiling as her personal swing (I was sure she couldn't reach it- and you can guess how that turned out), "attack" ankles from under the bed when you got up, "attack" and hang on your arm when you reached out for that cup of coffee, ruined quite a lot of wallpaper etc etc. And during all of this she got plenty of attention and had toys to play with.
She still has the right to check out whatever I'm eating and have a bit of that- with two dogs and two cats I know better than to leave food I want to have myself where they can reach it.
But you know what? After a (loooong) while AND getting spayed she calmed down, and today at 6 yrs old she doesn't do much damage at all and is a real sweetheart most of the time. I think she must have been about 1,5 yrs or so when she finally started to calm down, and it did take time, didn't happen over night.
She used to make a lot of noise too, don't know if howling is the word I'd use, but believe me, it was loud! She mostly grew out of that too, she can still be noisy, but only very occasionally.
For the scratching I'm not much help, the only thing I've tried to protect from scratching are the walls, and that's been easy enough. I can deal with scratched furniture and rugs, I don't mind that.
Don't know how much help this actually is, but at least you know that others have gone through similar things and survived. I'm sure it must be hard since you're dealing with this right from the start, at least I had time to fall in love with a cute little kitten before she showed me her devilish side.