I suggest going to your LYS and telling them you're looking for a DK weight acrylic bamboo blend. Also tell them what you are making and the characteristic you need in the yarn such as drape.
I knit with the yarn owners and employees of my LYS so I know from experience that info makes their job easier and more effective. It's possible they won't have what you need, but can suggest another fiber blend that might work for you.
And yay for you helping to keep them in business.