The only teams who can drop below us with a win next weekend are Jacksonville, Carolina, Arizona and the Chargers, and their games next week are vs Indy, vs NO, @ Rams and @ KC respectively. I can't seen any of our four draft rivals winning those games even if one or two of their opponents rest starters - best bet would be Arizona because the Rams stink, but it looks like Murray could be out.
Conversely, if we win against a Buffalo team that has already locked in the 5th seed and will likely be resting a bunch of starters, we're guaranteed to drop beneath Oakland or Denver in the draft (because they're playing each other) and also Cleveland and Atlanta if either of them win (@ Cinci and @ Tampa respectively).
If my math is right, our final draft position is at best #6 and at worst #13.