That Hutt Armor doesn't have a price associated with it but it would be astronomical (and compared to other prices maybe more than a capital ship) and would be something that a PC would really need to work into. I can't recall just how close one could come using priced armor and mods but it wouldn't be cheap.
I agree that Hutt Armor with those stats would be costly. Some of the things can't be done with the rules for upgrading equipmet as far as I can see.
This is what you need:
A Heavy Armor with about Ref +10 that can take all or most of these upgrades. Enlarging it to suit a Hutt would also add one more upgrade slot something this armor will need. Strip any extras that are not needed.
A Helmet Package
Shadowskin upgrade
Powered exoskeleton upgrade
Weapon mount upgrade
Integrated Equipment 5
E-Web Blaster
2 hold-out blasters (I would probably use Heavy Blaster Pistols instead)
A droidified datapad with integrated commlink and translator unit (DC 10).
This one can use aid another on skills to boost those. You may have to install a higher-level personality to accommodate all those skills. The “droid” can also regulate the power to the E-Web.
The suit is said to have a backpack generator. I think this is actually part of the E-Web, but would probably have enough power for the other systems as well
I still have no idea how to get a bonus to DEX or increase the speed to 12. Not without droidifing the whole armor and installing hovering locomotion anyway. I guess that you could approximate the cost of the repulsors with the cost of hovering locomotion on a large droid, but it is technically not allowed. Also, those are normally caped at 6 squares per move. It would likely need more than one Superior Tech or Tech Specialist upgrade as well, and that would make it a legendary item…
Is it armor, a vehicle, a droid or a weapons platform? Maybe a bit of all those things. Neo-Crusader assault armor would be a good place to start, but that is also a bit tough as those are also extremely rare, impossible to find in later eras and pretty much priceless. But at least it should have room for most of the upgrades!