Crockpot Black Bean Stew

Brian has a chorus concert tonight, and we very much need dinner to be ready by 5.  Hopefully, that will be the case.  The thing is, the crockpot recipes in the cookbooks cook in under 8 hours.  I have anywhere from 10-13 hours before we eat dinner, so I need something with a longer, not shorter cooking time.

 Soooooo....
This is one I made up all by myself.  Pretty much.  I cut up carrots, celery, and potatoes and put them in the crockpot.  Then I emptied a bag of dried black turtle beans into the pot.  I added ½ tsp garlic powder, 1 tsp oregano, 1 tsp cumin and 1 TBSP chili powder to the mix.  My greatest fear with this is that I may have added too many dried beans and not have enough water to cook them completely.  The pot is chock full to the brim.