I commend you for blazing the trail!
A couple things to consider with this character. Do we have official LFL images and/or artwork for Wad'e? If we do, can we see the costume from all angles?
We do not

We have nothing but a few passing references in the Republic Commando series about his beskar'gam being purple like the bes'bev he carries on his belt, the fact that he has an ancient bronzium spear, and the knowledge that as a Mandalorian of the same era as Skirata, Jango, Bralor, et al. he'll most likely have similar armour.
There also may have been an action figure, like the Skirata and Bralor ones, but I can't confirm.
The sketch is one that Wade Scrogham, the inspiration for Traviss's Tay'haai character, had commissioned based on his discussions with Karen Traviss.
You're absolutely right about building this kit and making the adjustments for the CRL, but without the above things, it's really tough for us to write a CRL/BRL for Wad'e Tay'haai.
Should that stop you from trying? Absolutely not. Knock out the build and make sure you adhere to the CRLs and you won't have any issues with having an approved kit.
Thanks Mi'ix. I saw him listed under the acceptable characters for the "Legends Brigade" here
http://mandalorianmercs.org/forum/index.php?topic=79146.0and I think he was under-used in the books..... so I want to build it
