Hi there and welcome! I can tell you are so excited about these dolls. Isn't it great to find a place where others feel the same? This is a great place to spend time.

Kirsten was my first doll at age 26! I also have her St. Lucia outfit, winter woolens, skating outfit, birthday dress and treats, and nightgown. Now it's taken me 10 years to get all that! I didn't buy a lot for her over the years because I thought it was silly for a grown woman to buy doll stuff BUT now that I found this board I realize it's a great hobby to have whether your 7 or 37! It also helped that my dd became interested in the historical dolls this past year. I'd been waiting and waiting for her to show some interest. Her first doll was Felicity and we have most of her outfits now. She'll be getting more outfits and Penny the horse for Christmas.

I know you mentioned that you are getting Kirsten for your dd. I would also get her nightgown and if possible her bed. My dd always wants her dolls to have pajamas on at night and she really wants a bed. My husband is going to make bunkbeds for the dolls as a Christmas gift. Kirstens birthday treats are cute and all her outfits are darling. I guess I would start out with:
Doll, nightgown, bed, one other outfit, food, and of course her stories. Sam's club sells the collection of AG stories for a good price sometimes (@$24.00). I haven't checked lately but they should have them soon since Christmas is around the corner.

Good luck with your decisions and let us know what you decide!