I'm not familiar with the T-07, but all my Tamiya tanks start up when you switch on the tank power if the transmitter's on. You can add a switch-actuated warm startup/shutdown function with Dimension Engineering's Pico switch (or the Turnigy version)-- a tip I picked up from the DAK website for programming the original Spektrum DX6.

I strongly suggest that you get the er9x firmware manual.pdf (Google it). With it, I figured out a lot and wrote a tank-specific article on programming the Turnigy 9x: http://jbwid.com/art74m.htm . This briefly covers the issue of firing the cannon by adjusting the end points of the left stick past the norm (also from the DAK website). This should also apply to firing the machine gun. (I don't know about turning on the lights, since none of the DMDs I have control lights.) The Turnigy 9x is an incredibly powerful transmitter, but it can get a little tricky to program some of the fancy stuff. The info's out there, you just have to search for it and experiment!

Good luck!