Great Kit, love the weathering and colors!!
The colors I went with have been a long time favorite color scheme that just works (Blue, tan, brown, white, and black) that I learned about back in High School Level art classes
Most upgrades are planned for when the weather is a bit nicer but I have made some progress. I already bought a commpad that will be mounted to one of my gauntlets and I bought a vader chest box that I will modify into the back radio pack. I was considering doing a full backpack style radio pack but I was also looking for reference pictures that would be less of a hindrance to movement. I eventually found a reference pic of a 501st clone trooper that has what appears to be a radio on his backplate that is flush with his armor
After getting this design approved by the brigade app team I settled on this concept. I will use the vader box as part of the accessories that I will add to the radio pack. More will be added to prevent the vader chest box from being recognizable and I will mount the entire pack to the backplate similar to the picture above.