I know how much she needs, just not sure how much she wants. Also, it should be noted that these are in fact NOT brass. I think the brass ones were something like 10 times as expensive.
Let me know if you still want them.
ATA should fit you fine. I'm 6' and 212 right now and mine fits pretty well. You will obviously need to space stuff out a little more since you're taller, but it will look good.
How does your armor get so yellow? I had a set of FX for 2 years that never had any discoloration problems. I also never buff or polish or even clean my armor. I also keep my new armor in a large duffel bag with all of my stuff including my painted blaster and just toss it around hoping it'll get some nice marks on it.
Vader Dave's ab buttons were made mostly for the original FX suits. They came with big black buttons that were screwed in the same way as Dave's. He just made a set that was smaller and more accurate. With all of the new armor out there, the ab button plates are moulded and just need a little paint.