*UPDATE*
Because I have now hit two pages for this, I'm adding a table of contents here for new readers. Also adding a status list for my kit to help summarize what's going on
Table of Contents:
First Page:
Introduction to KitModelling of Gauntlet DesignsConcepts and IdeasSecond Page:
Reworking of gauntlets to actually fitWork on J2P helmet and collarplate repairContinued work on the helmet, and I get back to working on the gauntlet 3D modelsSanding helmet, adding flashlightThird Page
First gauntlet printed, working on soft goods*END UPDATE*
When I was 15, I bought some plates off the internet as well as the Rubie's Jango helmet for a Halloween costume.

I've been intending to go back and get this costume up to standards for a while now, but 'The Mandalorian' is what gave me the impetus to start back up on this project.
This is what I have right now:
I am thinking of basing my kit off of the idea of being someone who scavenged the Clone Wars battlefields for equipment and goods, but I'm not certain where I want to take that idea.

I do not have any soft goods ready to go, I will most likely be purchasing a flight vest and sewing my own flak vest.
Pro-tip: don't put your armor in a place where somebody could sit on it

I need to Bondo a lot of the helmet probably, and if I understand correctly I'll probably be straightening out the cheeks. I am also thinking of printing my own earcaps and mounting lights inside of them (I rewatched the relevant portion of the Mandalorian and it looks like his light is mounted externally but as soon as he turns it off it's only his earcaps)
If I do lights and fans, I will either be looking at putting both in parallel on one power source or using two power sources. I will be running these wires out of the helmet, through the flight suit/under the flak vest, and into the gauntlets. I will probably put connectors at the helmet and at the gauntlet so that I can leave the wires permanently routed through the flight suit.

I'm thinking I want to go for shknees, I'll probably have to use sintra for those

I need to make better gauntlets, I will probably be 3D printing those so that I can include the correct dimensions for my electronics

It looks to be 3mm, and I would assume it's sintra.

I want to include pouches of some kind similar to the ARC trooper/Captain Rex pouches from Clone Wars somewhere in the shoulder/chest region.
To-Dos (in no particular order):
General:
-Decide if I want to keep my kit the same color. If yes, find matching paint. If no, decide colors and paint it
-Buy flight suit
-Sew flak vest
-Buy velcro and/or strapping for mounting
-Weathering
Helmet:
-Bondo
-Sand
-Paint
-Replace Visor
-Print earcaps
-Install fans/lights
Gauntlets:
-Design and Print
-Paint and weather
-Mount electronics
Shknees
-Acquire material, cut and shape
Collar and codpiece
-Repair with bondo, and then probably sand and repaint