The screen that you proposes sounds OK.
3.3V power supply
Touch Screen Interface: SPI
16 data lines.
RS, WR, RD for control the screen.
RESET for the reset.
BLCNT for the back light.
TP_SI, TP_SO, TP_IRQ, TP_SCK for control the touch pad.
It is 16 data lines, 3 control lines, plus RESET and BLCNT. 21 lines for control the screen.
It is 4 lines for control the touch pad.
A total amount of 25 lines
for control the touch screen and 3.3v that allows to connect directly to the microcontroller.