I'm looking for 3 specs and good plan for the shell Armor...

I'm tempted to do hermit niman executioner or arbiter

Or Shi Cho hermit colossus

Or ditch the armor and do niman arbiter ascetic...

So many options what do people think?

Armorer would be an excellent choice here. Raise Brawn and Willpower to 4 at start, take Niman and go for Falling Avalanche from Armorer for heavy hitting.

Hmmm

I think it depends on the Hutt Jedi you're going for.

I'm playing a Hutt Mystic Advisor; when he eventually starts to use a lightsaber it'll be with the Move power specced to fine manipulation and range. He might even run two of them. I'm playing him as a non-interventionalist - he uses Influence to get his way and supports the party with Battle Meditation when they're in a firefight, but essentially refuses to carry anything

He's GREAT in social situations and not intimidating at all outside of them, which makes it that much more awesome when he convinces opponents to turn on each other

A slim speedy Hutt could be a lot of fun though. Grakkus in the comics had cybernetic legs - like a millipede almost - that he used to increase his mobility and was both slender and brutally strong. That could be the basis for a pretty fun character