There is wide misunderstanding of thermostat function. It's primary function is to set the LOWEST operating temperature boundary. Thus, installing a lower temperature thermostat will NOT reduce maximum coolant temperature in hot weather stop and go driving. The thermostat also acts as a restrictor to establish maximum coolant flow rate, so removing it is a BAAAAAAD idea!

The MAXIMUM operating temperature is a function of radiator cooling capacity and air flow through the radiator, and this is where the fans come in.

It would be difficult to alter the engagement characteristics of the mechanically driven fan clutch, so the cut-in point of the electric fan(s) is all that's left, and the simplest mod would be to install a manual "ON" switch in the circuit, controllable by the driver.

Most OEs set the fan engagement point near 230F/110C, which they find acceptable, but, like most, I consider this too high. If it were my design choice, I would set up the control system to engage the fan(s) at low speed when the coolant temp is over 205F/97C anytime vehicle speed drops below 15 MPH.

If the A/C is on, the coolant temperature will often be lower than with the A/C off because the A/C pressure switch will turn on the elecric fan(s) periodically to provide cooling air for the condenser to meet A/C cooling demand.

Duke