501st doesn't approve customs, but you could be part of the Mandalorian Mercs with it. As for the question at hand, I'd say go Rav.
Got my helmet ^_^
As already said, 501st don't accept femme bobas... I am going to see if the uk femtrooper squad will take me when it's all ready :-)
Whoever you pick, prepare to spend lots of money, constantly worry about getting it all right, and weirdly - find yourself emotionally involved. Yes with a costume!
Aicire, my husband and I are in exactly the same boat as you, we would love 501st approved costumes and are just getting started. I'm glad I checked the forums carefully, alot of my questions got answered here...thanks to all and good luck to you Aicire!
(we may end up making 'just for fun' outfits first to learn and experiment)
Just to clarify some above points, Rav Bralor was just in the books, with no description. Likewise Isabet Reau, Dred Priest, and Llats Ward -- all of whom were included in Entertainment Earth's Mandalorian packs (along with Clone Troopers in training and all four members of Omega Squad). EE used Tom Hodges artwork of his wife's persona of Vhonte Tervho to come up with their color scheme for Rav. And his artwork of the wedding of Mirta Gev and Ghes Orade for their Isabet Reau and Dred Priest figures. So it's a matter of which you lend more credence. I tend to favor the artwork's validity over the action figures, as Hasbro and EE have played pretty fast and loose with other things, too. Rav has close-cut salt-and-pepper hair. In the artwork, Vhonte has long, braided honey blond hair. So already their Rav figure is inaccurate to the source. And I personally don't think it's terribly common for non-organizational Mandos (as in, Death Watch or Protectors) to show up sporting the same colors in the same scheme as someone else.
I don't get too grumbly with April, up there, over her kit because it's gorgeous and she was working to recreate the figure and loves Rav, and I can't fault her for either. I just bite my lip and don't rant about it, because neither has been shown in a movie or an episode of the Clone Wars, so neither viewpoint is entirely disprovable. *heh*
As for Bo-Katan, what references are you looking for? She was shown in an episode of the Clone Wars, so that's all the reference one needs for something to be "valid" in the eyes of the 501st. And there are full 360-degree views of the character available to see what's what, and I can point to several vendors who make the helmet, armor, gauntlets, etc...
As for female Boba Fett costumes... That was explicitly called out as the uniform of th eMandalorian Protectors during the Clone Wars. Spar, Fenn Shysa, Tobbi Dala, and Boba Fett all wore it, and there were over 200 others who fought in the Wars, as well as others who only joined up after the Wars were over (like Boba), or also when Shysa reformed the Protectors after the Empire fell. You'd do the green-and-yellow color scheme, but ditch or alter the Boba-specific features into a "custom" Protector. Even if you couldn't get into the 501st with it, there's a section within the Mandalorian Mercs specifically for Protectors -- canon and custom.
So you've got options.
Thank Jonah. I really appericate your insite ^_^
Good luck to you Ihala and your husband!