SlowmotionQue
Full Fledged Farker
Think about it this way:
What time frame, cooking butts of the same weight range, on your UDS, have you experienced?
An offset won't cook any faster. Especially one you don't know how it runs!
Please don't take the risk of ruining your son's graduation, and the respect of his peers.
Take the advise of the comments from the guys here. They know of what they say.
I agree.
We just had a well meaning father around here, ruin his daughter’s wedding reception because he bit off more than he could chew when it came to preparing the food.
Those who knew good BBQ when they saw and or tasted it, and even those who didn’t, knew the cook was a mess because the food was.
It’s possibly better to have the event catered at this point by one of the local well respected bbq establishments, if there is one. That’s it it’s not too late for that.