I presume that the TFT will be plugged into row c of the breadboard.
Surely you would implement a voltage divider by dividing the voltage.
You are simply providing a 1k8 load to the Nano 5V logic. And a 1k2 resistor in series to the TFT.
This would probably work but is not ideal. (A series resistor limits the current going to the TFT substrate diodes)
You should connect the Touch SCK, MOSI, MISO lines to the bus.
No, I do not understand why the module does not link all the SPI bus signals on the pcb. It would save 6 external pins. On the other hand, libraries like UTFT and URTouch have no concept of hardware SPI or bus.
To make a voltage divider: move the 1k8 resistors to row a and GND.
David.