Welcome from Southern California.
Wow - where do you start? Are you going to hand quilt or machine quilt? Either one you need a rotary cutter, cutting mat, good scissors (to use only for fabric), I also have a small pair of scissors, a thimble that fits, I like to buy thread when I need it instead of buying a variety. It always seems I never have the shade I need when I buy various colors because they were on sale. You will build up a stash soon enough.
Good lighting is a must. Also a good seam ripper - don't want to discourage you, but it is an extremely necessary item. Also, good quilting straight pins.
Once you start, you can't stop. I really like gadgets so there are a lot of items you want but can do without. I have a needle threader because it works and I think it is cute. And I have several wonderful sewing baskets, when all I really need is one. But these items just start to follow you home.