Congrats on your high-end camera, Captain. You have a macro lens for close-up shots to go with it? And a really stable tripod, of course? NOBODY needs anything more sophisticated or more expensive. All the rest is lighting. And composition.
I do recommend tethered shooting for more control, though (computer connected to the camera via cable or WLAN).
I haven't bought a new camera in years. Let us know how you like it.