I have lined these, and yes, batiste works very well. I used the pants pattern to cut the lining, and at the hem/cuff edge I cut the lining 1″ shorter. Stitch the pants together at all seams (legs, inseam etc) and do this also for your lining pants. Next, lay the pants down wrong side out and front side up; lay the lining pants down also wrong side out, front side up, and with the hem edges touching the hem edges of the pants.
For each leg, pin just the hem edge of the pants to the hem edge of the lining pants right sides together matching seams–it will look weird–poke the lining down inside just enough to be able to stich each hem edge with a 1/2″ seam allowance. Now turn the pants right side out pushing the lining to the inside, and then pull the lining waistband edge up to meet the pants waistband edge and pin along waistband edge matching seams–at the hem edge now, the pants fabric will be drawn to the inside 1″.
I’ll see if I can’t find some pictures of this process on-line, or maybe someone else could write this out more clearly! I drew my self pictures on my pattern instructions so I wouldn’t forget how I did it 🙂
I would suggest nude/ivory batiste to line the wool–also consider Spechler-Vogel imperial batiste which has a touch of poly in it which will give the wool more movement. (this batiste is available through farmhouse fabrics, though it may be available else where, too.)
can’t wait to see pictures of your project! sounds delightful!