pork shoulder

Looking good. Going to be some happy people. 

You may find something in the below, originally posted to @feef706's thread:
"One or two (or more) as long as they aren't embracing each other will cook as a single stand-alone butt.  A few things-
you will see a longer temperature recovery time since you will be loading a greater amount of cold pig.
Make sure you have a large air-gapped drip pan to catch the renderings.
The smaller one may finish later than the other-each pig has mind of its own.
Best finish-line indicator is when the bone pulls clean.  No bone-piggy probes like buttah; likely somewhere in the low 200's*F.
Butts are very forgiving-you can cook anywhere from the low 200's (as you experienced) up to turbo temps (300*F+)  and still get a great result.
If you want more on turbo, try the search function here or use google and add "big green egg" to your query.  Enjoy the cook and eats."

Looks great. What was the total cook time?