I am a design engineer with a very limited knowledge on electrical engineering, however, i am working on a project that requires building a simple circuit that can generate heat and provide a narrow range temperature controlling mechanism. My basic knowledge tells me that i can just use a resistor, an LED to serve as an indicator, a heating coil, and thermistor. i also researched some more and was able to come up with the schematic below. i need assistance to verify if this circuit is feasible. Thank you.