From reading your post, I'd say you may get some ideas from the spines/electric armor thread I posted a week ago. It's a different armor set, but you may get some ideas to tweak your build. Food for thought anyway.
Just a heads up if you don't know... Shadow Meld only lasts 15 secs, with a 90 sec recharge, if that changes your perception on anything.
@Ninth Cloud
Justice
Basically what I want to do is take one of my 2 spines/fire, (yes 2 I liked it a lot a couple issues ago) and take it vill side and grab Soul mastery just plug in Shadow Meld to get near softcap defense in just about everything and use the rest of the build to get everything else, rech, HP, end, and +dam. Basically is this a smart move on my part and does anyone have a build so I can take a glance at it?