I thought about option #3 first, but then I have to have a long control cable. I don't know how long the distance is. I move every three years at the maximum... trying to maintain my flexibility. Mostly I have the SSRs close to the controller and let extension cords do the rest of the job. Just keep adding every year to the extension cord inventory. One day I might settle down and change my configuration, but for now this works.
For options 1 & 2. I realize for #1, I have to have three power supplies and that is ok if I have to do it that way. If I did it that way, I was planning on linking the grounds via the RJ45 cable... not sure if that works or not. Option #2 takes less power supplies, but I was concerned about the power over such small wires, but I'm not planning on that much current anyway. Hopefully not over 300mA based on my calculations. But not knowing the distance I don't know what the drop in voltage would be either.
Thanks for the feedback... will have to keep thinking about it for a while.