Remember labor is good for baby, even if it ends in a RCS. For me the benefits to baby (and me) from labor are worth the risk of laboring and ending in a RCS.
Also if you schedule a RCS your odds of a RCS are 100% where as if you plan a VBAC your odds of success are greater than your odds of a RCS.
As for suggestions, drink red rasberry leaf tea (3 cups a day in the 3rd tri, 4 cups daily after 36 weeks) it's a uterine tonic and should make labor shorter by helping you dilate quicker and contractions more efficient and effective.
Do prenatal yoga (there are some great free video podcasts on itunes and youtube of prenatal yoga classes), walking, drink lots of water (RRLT counts), do spinningbabies.com daily exercises for optimal fetal positioning, and generally stay healthy.
You can also See a webster qualified chiropractor if your comfortable with that to help baby and you be optimally lined up for delivery.