Welcome Kalmak!
Deciding is always the hardest part, so many good costumes to choose!
Definitely check out the CRL's on the main Rebel Legion site -
http://www.rebellegion.com/costume-standards, if you haven't done so already.
If you get a chance drop by the Tython Base Forum for your local Base members, at
www.rebellegion.com.au. They'll probably have more localised expertise, and be able to help you source local makers of parts/materials etc.
If you're keen for Social Media, don't forget to like their Facebook page to follow along with their exploits -
https://www.facebook.com/RebelLegionTythonBase
You should definitely throw a like on the Tatooine Facebook page too (I might be biased but I think it's better than Tython Bases) to see what we get up to -
https://www.facebook.com/TatooineBase
Ask questions, no matter how silly/weird you may think they are, we're help to help
If you ever venture up Brisbane way, myself and I'm sure others would be keen to meet and have a chat (chat=beers).
tldr; Welcome! If you need help let us know! Hope to meet you one day