Evans Coolant Temps

Just got back from taking the car out for the first time. Got hot in the neighborhood 230, and cooled down to 200-205 after a mile or so on the highway at 50-55. BUT when I got home I discovered that my number 7 plug wire was pulled out from the sparkplug. Looks like the steering shaft caught the boot guards I had put on and ripped the wire off I'm assuming right at the start of the test run. I thought something sounded off but given this was the first time I had driven the car I still don't know all the different sounds and noises its going to make. Once this rain stops I'll take it back out hopefully on all 8 cylinders this time.
In my book those temps are to high.
What was the ambient temp?
Plug wire wont make a bid difference.