Also I decided to go with Calamity it's a good support unit despite it being grounded. It will prevent Richard from stealing spotlight from other characters. Also it's more or less was made in 71 and it is considerably less powerful than other suits such as say Justice or Akatsuki depending on the pilot. Orga was a boss.

Calamity was made from the designs of Buster gundam but it was made "In mid CE 71" so the time line fits. For the sake of convenience let's just assume it's just another model. If it is such a big deal to the others I will switch to Buster itself.