Valve cover paint recommendations

My 383 HP Engine has been rebuilt with 0 miles on it. We have been tuning it and starting it twice a week. The valve cover paint on the side is already peeled off on the passenger side . I used the Plastikote Chrysler Orange and it is good up to 500F! I guess that's not enough. what do you guys recommend to use ? I like the color of the Plastikote , and the whole engine is in the car painted that color. should I powder coat them ? Thanks

I just used MP turquoise paint on mine. It's held up well so far.