you forgot the most important and useful command which is recall!
instead of adding "tricks" i'd proof the ones he already knows. will he sit outside? will he sit inside petsmart with dogs around? will he sit in strange places? willl he sit at a distance? proofing is important. a dog that sits inside the house doesnt mean it will sit outside with distractions around. of all the "cute" tricks, i like sit pretty and wave the most but those are only useful for picking up girls.