This is my personal [Rhino Prime] Build that i use for High Index with a Melee.
This build is great cuz it haves [Iron Shrapnel]. This means that whenever you feel like your Iron Skin armor is going low u can just get an energy orb and press 2 twice and u will be able to get a new shield.
You can also change the aura mod for [Stand United] wich will give you extra armor but you would have to spare a extra point somewhere else.

(This is my first shared build so im sorry if the description is not what you expected)