IMHO, when the point reaches 200, it is done and ready to rest. The flat will be fine, any dryness (shouldn't be ) can easily be cured by soaking in the au jus or sauce if you dare.
Smokin' In The D BBQ Team
Southern Q Gravity Limo Cooker
Southern Q 500 Water Cooker
Sometimes It's better to ask for forgiveness than permission
I like to sit down and have a quiet beer, then several noisy ones