All in, great first effort and baseline to start with. Dalmatian rub worked really well. My second cook using jealous devil briquettes which were $$ but held the temperature really well. Got more sleep than expected, and my temperature alarms never went off. Post oak chunks following the traditional central Texas style. I put it on at midnight, spritzed with apple cider vinegar at 3, 4, 5, 6, and 7. Around then it had a nice bark and reading 170 internal. Wrapped in butcher paper and cooked until 203 internal around 12:30pm before resting 2 hours or so. It passed the pull test, and was not dried out at all (especially because I was worried about that given the fat cap trimming). Nice cut of meat from Porter Road. Extremely juicy and well rendered. Frankly I could not be happier with how it came out. Room for improvement of course though. Need a better carving knife (and better skill), as a few slices I made a little too thick.
My guests loved it which is what mattered most. Added another picture for good measure. Looking forward to leftovers tonight!