Welcome to BB! We will, of course, require plenty of pics of your cutie when you bring her home. We live on bunny pics here.
I'll just tell you what my nethie girl had when I brought her home.
First.. she has carefresh litter. She's a picky girl, and likes softness on her tushie. Alot of people here use either woodstove pellets, or yesterdays news for litter. Woodstove pellets are a much cheaper option, if your bunny approves of course.
For hay, a nice timothy grass hay is recommended for adults, but babies like it too. If yours gets timothy hay, a bit of alfalfa mixed in will get her the extra nutrients she needs to grow up to be a beautiful lady. My girl Monkey HATED alfafa, so she just got timothy hay, until i started getting a mix that is done here locally that has oat and rye and orchard grass mixed in as well.
Pellets, alfalfa based Oxbox pellets are good for babies. the timothy ones are good as well, if you provide alfalfa hay. Bunny Basics T are the timothy ones, I forget offhand what the alfalfa ones are called as I never had to buy them

But Oxbow is a really good brand to go for.
If you can't get a fresh grass hay locally, from farmers or feed stores etc, Oxbow is a good brand of hay to buy. It's generally cheaper if you do NOT buy in a pet store. Pet store prices are rather ridiculous. BB sells some awfully nice hay too
..that is all I can think of for the moment... OH. One more thing. Don't bother with those tiny little corner triangular litter boxes made for bunnies. They suck. Get a regular sized cat litter box instead. Mine love them, and there's no messes over the front edge