-Go with the narrow zigzag stitch.
-Have intermittent pins at about 15cm intervals and as you sew it, gently tension the fabric between what's just gone through the feed dogs to the next pin. This helps guard against one layer of fabric creeping along the other.
-If you have a walking foot, that helps enormously.
-Don't have your presser foot pressure too high, either, as this can make the fabric creep worse.
-If some of the seams are curling horribly and your fabric is washable, spray the edges with spray starch.
-Test launder and press a sample first to see how much you can abuse your fabric before committing to any method of bending it to your will.
-Don't be scared of it until you've tried. It's only fabric.