crvtt - Try 225 for the entire smoke, and maybe a tad less sugar. But I would try the temp change first. Also keep in mind that your chamber is small, so if 2 or 3 ounces of wood (weigh it) is perfect for a model 3, it could be a bit much for a model 1. If it tasted good, maybe cut back on the sugar or the rub itself. If bitter, cut back on the wood so that the actual smoke is reduced to one chunk burning not two.
I use 2 oz of wood, brown sugar, Kosher salt, black pepper and the temp is 225. I remove the butt when the IT hits 190, which is after a long stall. It takes longer to cook at the lower temp but the family loves the results. That is all. As for sauce, that is reserved after it is pulled/shredded.
Hope this helps. And your final product looks good to me. I have seen, had, and cooked darker, and they were all good (except my one over smoked shoulder thinking more wood was better, I think 10 or 12 ounces).