I'm currently building an E-HERMS setup. I'm using 3 keggles but instead of using a diptube I'm using a bottom drain for two main reasons:
1) Ease of cleaning in place
2) Improve efficiency due to less wort being left in the keg
For the MT I plan on using the jaybird false bottom. Not sure what level filter stand I want to use below it but most likely two or three.
My biggest concern is the BK. What are you guys doing to minimize the cold break and any other trub from escaping the BK. I'm using a plate chiller to cool the wort and will be using a hop spider to contain the hop pellets