Volumio 7" display

Is it possible to use just boom DAC Hat and Justboom AMP Hat with the display? It looks like it utilises power through the GPIO pins. If so could i either connect standalone Hats or solder the display wires to the other side of the header pins (GPIO)?

I’m running Volumio on a Pi 3 and the standard 7" display. The Smart Pi touch case I put it in came with a usb splitter so the Pi and display can both be powered by the external power supply. For audio output I use a Justboom Digi HAT. This hardware and the latest Volumio version worked first time right out of the box.
Sounds pretty close to what you are asking, hope this helps.