We don't actually process your measurements in real time, which is why we couldn't say what your measurements are when you finish.
For fabric selection, we're working on nice photographs of real shirts made (just takes time and money) -- it's actually the #1 complaint we get.
We can definitely do a pocket button. We may be able to do a 3rd collar button. If you would like those options, please email support@mtailor.com, and we'll see what we can make for you.
What kind of statement would you like? As I stated previously, since we make higher end custom shirts which require skilled labor (custom vs. off-the-rack), we focus on quality rather than squeezing out every penny on the manufacturing side. Don't know if that's what you are looking for though.