I think that sounds like a wonderful idea, it will help you enjoy yourself and just relax. Have fun little time and yes, if you want a Paci you should go get one; it'll help you getting into little mode. In america if you are confident enough you can just go to your local store to get bottles and pacis, I've done it a few times and none thinks anything of it many just assume you have have a little one around the house.
If you don't want to go buy ones in the store I would suggest going on amazon or wherever you get your diapers and see if they sell them. Also aliexpress is a good website as well
Best of luck in you endeavors and have a great time.
I will say two things . Teddy's are great for restless sleepers who toss turn or fight in their sleep. Teddy's can be found at build a bear or you can get tv show based medium plushy character easy off the web