It sounds like you are well on the path to produce fine swine.
The idea of perfection is interesting, I believe some organizations have a "perfect" score, but KCBS judges essentially score from 9 being excellent, 8 Very Good, 7 Above Average, 6 Average, 5 Below Average, 4 Poor, 3 Bad, and 2 Inedible in 3 catagories....First Appearance then Taste and Tenderness. In each category we are given guidelines in the CBJ class to assess each criteria, but the reality is there are typically a 1 to 2 point spread in the scores in each category and sometimes much more...I say all of this to say there is a huge variety of opinions that make something Excellent and if a 10 were perfect, there would be endless debate on the criteria.
For the backyard enthusiast, competition quality BBQ is not even significant. An "excellent" rib delivered piping hot in a clamshell can have the winning flavors diminish to an 8 or a 7 easily with only a delay of 20-30 minutes in the judging of the offering and many times less, so that curious neighbor that nabs a rib before the guests arrive is going to have a different experience than cousin Judy that as always arrives 45 minutes late.
I won't bore you with how much your own perceptions can change with how you alter your own palate.
At the end of the day, a whole lot of backyard BBQ is quite tasty. Does it have a good smoke smell, are the flavors balanced(my opinion), is it to your desired tenderness which can vary wildly, does it make you want to kick Sonny in the teeth for serving the crap that he does(my opinion, lol), but by all means, experiment with different rubs, injections, sauces (or not), smoking wood, temperature, wrapping combinations and let the guinea pigs that hang around tell you that all of it is the bomb-digity, because it is free and it is better than you know who's.
Have a great time!