Ok so my Mega Pinsir has Moxie as it's ability. Other than that it is jolly and pretty much matches your EV training set.
You mentioned swords dance in there, as Pinsir is so squishy is there a specific time you would use that? Or as I have moxie would I be able to take something else?
Also I love the second Starmie so will deffo be adding that in. Thanks :)
You set up Swords Dance on a predicted switch. Pinsir's regular abilities are better as a pre-Mega ability because Hyper Cutter can block an Intimidate, while Mold Breaker lets Pinsir hit Levitate Pokemon with Earthquake (Wash Rotom being a prime example) before Pinsir Mega Evolves.