Hopefully I am doing this correctly by using a comment and not an answer.
To answer the questions so far, Flamethrower on Chansey is for the common Scizor and I see Forretress sometimes, I use Dhelmise because I wanted to choose something uncommon and Dhelmise with that set has a very powerful Gyro Ball and has good coverage, and Shell Smash Cloyster is an amazing sweeper, I have won multiple times just using Cloyster. Though I think I will change Gliscor, open to suggestions.
As Omega said, Trick Room would only hinder. Charizard and Cloyster are the sweepers of the team, and once set up, hard to stop.
This is my first time making a comment, so if I did anything incorrectly, such as formatting, please let me know. Thank you.