question about chemise gown

Can anyone tell me about how many yards the chemise gown (chemise a la reine) requires? Would 4 yards of 60" be right? 5 yards? I'm 5'5" with a 27" waist and small bust.

Also, I found a ton more of that pretty cotton voile at the Joann's here in Vermont. Would that be ok to use to make this garment? (see the fabric HERE)?

Thanks, guys!!