Welcome!
If you don’t have Vanna’s Choice available you could check out the yarns and projects on the cardi’s Ravelry page (free to join). Look at the tab towards the top called “yarn ideas” to see what others have used.
There’s also a site called Yarn sub that is very helpful for substituting yarn. It not only considers the gauge (sts/inch) but also the compostion and drape of the knit fabric.
http://yarnsub.com/