Lets look and see.
40 watt Nozzle heater is 3.33 amps
If 4 Steppers motors drivers ~ 2 amps each is = 8 amps max.
leaving ~ 1.17 amps for the LCD and all other components.
If 5 Stepper motors no.
Now if the Steppers are 1.5amps then 4 steppers would be = 6 amps that would leave you ~ 3.17 amps for the LCD and all other components.
This could work.
Computer Programmer / Electronics Technician