It's pretty common for babies to still be "floating" at 36 weeks, according to everything I've read. The dropping doesn't usually occur until 37 or 38 weeks, which is probably why your OB is waiting another week to check you and the baby's position.
I'd be more concerned with declining levels of amniotic fluid -- that's probably the real cause of your OB's concern, since that fluid is what's keeping baby healthy and happy right now. At this point in your pregnancy, you're at your max amount, and some decline is normal... but she's just watching it make sure it's not declining too quickly.
It's good that you have a positive attitude about c-section vs. vaginal delivery. Whatever's best, right?
I had a prior c-section and have a second scheduled for 2/23.