I had my ISO set up a little high, and I reset my shutter priority to 1/500th thanks again for the tips!
Just keep an eye on the Aperture that the camera is selecting while in TV mode. For what you are doing, the higher the f stop the better for a deeper depth of field. It shouldn't be a problem in bright daylight, in fact you may be able to go even faster on the shutter (which would be a good thing in this case). So, if you see that the Aperture (f stop) is pegging around 18-22 or so, you can crank the shutter faster.
One trick is, set the camera to AV (Aperture priority) and set the aperture to 22 and take a picture, note what shutter speed the camera picks. As long as the shutter speed you are getting is above the 1/250th mark you should then switch to to TV mode and set your shutter one notch slower then what the camera was picking on AV mode. This should get you best possible depth of field and as long as your shutter is still around 1/250th or faster you'll be golden.
You could just use AV mode all of the time, but setting to TV mode is a habit that I picked up when I was shooting sports all of the time. Better to control the shutter and be on focus, then to control aperture and risk the shutter being too slow and producing motion blur.
Hope that all makes sense. Let me know if it isn't clear. I usually have a chalkboard in the front of a classroom when I am explaining this stuff to people.
