Hmm. I dont know much about Jango's suit. However I know Delta13Mike does the belt. I did see a cold cast set of armor go up a while back. Depending on what version jet pack you want, Man of War does the arena pack and Kamino.
Looks like Bobamaker has a 2-3 month wait time. Arkady might be a while as shes getting ready for celebration. Could also get a Man of war flight suit and dye it.
He also makes the knees. Since DC props doesn't make those.
Could also reach out to Cruzer for some knees.
For the helmet Bobamaker(Daz) has a two month wait time, AnimeFan also has about the same wait time(cast from the actual helmet). Bobamaker also make the leather vest.
For the Leather I would suggest Delta13Mike.
For the Westar blasters I have a metal set from DarkEnergyCreations I'm selling for 430.