After doing some research over the last couple of days I have decided to go with Simplicity 9769 for chemise, drawers, and corset. I'll be using 100% cotton muslin for the chemise and drawers, and 100% cotton twill for the corset, since coutil is just not sold in any fabric stores near me. One modification I will be making is to lengthen the drawers so they come closer to the ankle.
     I have also settled on Simplicity 4551, dress B, as it seems to be fairly historically accurate for a Simplicity pattern. I will only have to make a couple modifications for historical accuracy, for example, piping the waist, armsycle, and neckline.
     I will also be participating in The Dreamstress's Historical Sew Monthly 2015. You can check her website out here. She has set different challenges for every month in 2015. I'm a little behind, but I hope to catch up in the next month! January's challenge was "Foundations" for which I will be making the 1860's chemise. February's challenge was "Colour challenge blue" for which I will be making the 1860's corset in white with blue hand embroidery. March's challenge was "Stashbusting", to make something out of fabric, trim etc. that you already have on hand, for which I will be making my 1860's day dress out of vintage cotton fabric my husband's grandmother gave me last year. And April's challenge is "War and Peace", to make something that shows the influence of long periods of either war or peace. I am thinking I will make a civil war era petticoat out of an old cotton flannel bed sheet. I do plan on working in different eras for the other challenges, but since I need my Civil War ensemble by June, I figure I may as well find a way to fit them into the challenges!
      So, personal goals, to finish January and February's challenges plus 1860's drawers by April 18th, and to finish March and April's plus 1-2 basic petticoats no later than May 16th. That should put me back on track with the Sew Monthly Challenges. Though, I will probably be making the petticoats first and the March challenge dress last. I will post pics soon, as I hope to start this weekend! Happy Easter!