Seismic Blast/EA critique/advice

[Wolfboy1]

I was thinking about doing this combo recently as I have been on a concept kick with my altitus and this one seemed to be a pretty good pairing.  Looking through the forums though there is 0 discussion (from what I have found) with this combo.  I have a build I made with the help of some other kind souls out there but I want Entomb but not sure how I should begin slotting it with everything else it has.  Obviously slots will have to be moved from other things to slot it but...im not sure what to sacrifice.  Power Drain and Overload are not really needed I think.  
 

Overall, I'm mostly just building this for decent survivability and damage...and will be mostly solo but able to contribute to teams when I go on them.  Itrials later on but nothing like 4* stuff will be done with this build.

Sentinel (Seismic Blast - Energy Aura).mbd

[Wolfboy1]

So i did a bit of a rework on the build and switched a couple things and reslotted some and on paper it looks pretty good I think, but of course I am probably missing something so if someone could look at it and see if everything is kosher...?  The only glaring hole I can see is the def/res to psi and toxic but...I think they are okay where they are and if need be I could eat a purple candy to get it a bit better.  Though if someone has a better idea, please advise!

Sentinel (Seismic Blast - Energy Aura).mbd