What do you mean by higher temp plastics? ABS, ASA, PA, PC ? etc.
Unfortunately, I can see some disappointment coming your way if you think you can print without any tuning of the settings. PLA is about the only filament that doesn’t generally need a lot of tuning in these machines.
The X1C bed can go to 120c, the P1P 100c.
Have you fitted the hardened steel extruder gears and hardened steel nozzle?
I don’t believe you need to change the gcode with the newer firmware to activate the MB fan.
Use the P1S printr profile, which uses the X1C setting profiles and enable the chamber fan. Bear in mind there is no temperature display on the P1 series, so you might want to get a cheap temperature gauge you can put into the machine.
I don’t want to discourage you too much as you’ve made your decision but something like the Qidi X series is better for engineering prototypes, as it has higher bed and extruder temps, active chamber heater, better filtration, better nozzle materials available etc.