Rolex Date 34mm suggestion for skinny wrist

[Joesan]

I have been a skinny guy all my life and I have a 15 cm circumference wrist which is roughly 5.9 inches (measured exactly). I'm considering getting a Rolex 34 Date with a leather strap. I have other models such as the Omega 36mm Seamaster mind, but I guess it is going to definitely look big on my tiny wrist! My question now is:

1. Is the Rolex 34mm date too much for my wrist?

2. Should I buy it new from an AD or look for used?

3. Silver or white for a brown leather strap?

4. Is the movement on the Date 34 a reliable one. It is the 3135 movement?

5. Can anyone give me the measurements for the Rolex 34mm Date and the 36mm Datejust (lug to lug, thickness)

Thanks for your replies!