Sounds like you've got alot to think about. For example: Are you going to have full armour like Jango or have your armour lacking the leg armour like Boba's does? Are you going to have pouches? If so what style? You mentioned Westars, one or two? and your holster rig will it be like Jango's (if so be prepaired to be called Jango from time to time) or will it be different (cross-draw or even shoulder holsters for example)? Will your gauntlets look traditional but with the mini crossbow launcher or will you have something entirely new? As I said, lots to think about.
As to the loin cloth, why not have it mid-thigh length and tattered instead of knee length? . I think the effect would look better. Half capes look alot better in my opinion than a full cape which tends to look too much like Vaders (or if shorter, Superman!) There's nothing wrong with a blue flightsuit at all. Depending on what you imagine I would suggest either a much darker blue for the armour or even black or alternatively white. Gold works with the blue as a nice colour for trims (ie: the trim around the T-visor).
