@Tc6string1 Great job! I had a little chuckle mentioning the Weathermatic pigtail; Being a Rachio Pro and and a Licensed Landscape & Irrigation contractor I would do the same retrofit as your photos depict on my service calls and installations with @DLane suggested the Outdoor Enclosure.
Looking at your photo’s I thought it was one of my job photo’s.
Besides all the benefits of installing a Rachio I would always enjoy Harvesting the pigtails, and the power supplies from WM controllers and enjoyed one less brick on the wall, as I added my Rachio’s functionality to my app for my sites, my clients landscape needs with my water conservation, Rachio data, and flexibility to my Irrigations systems and Plant Water requirements, and water management it all becomes a WIN! Welcome to the family.