hi geoff,
to overcome your DOF field problem, try shooting in A
mode around F8 or higher (great for sharpness aswell as increase in DOF.)
The downside is that your shutter may slow beyond hand-holding ability ... in which case you need to enable your flash / speedlite, or raise ISO (im anti-iso so i'd go with the flash.)
Also, are you shooting jpeg / raw? Try bumping your exposure bias up 0.3 or more ... or load a custom curve into your camera if you want some more "brialliance" straight out of the box.