Plumbing Plan Critique

[mgramann]

Below are some images containing my plans for the drains in my project.http://countryplans.com/smf/index.php?topic=12814.0  While I have done a great deal of plumbing work, I have never started from scratch like this before, so I really need some help.  For my project I plan to keep the gray water and black water separate so I can install a gray water system at a later date.  I used 2012 IPC as a basis, so I think I am in compliance.  The only think not included on this diagram is the vent for the graywater sump.

I plan to use 3" pipe for all of the blackwater applications, and primarily 2.5" pipe for the graywater applications.

Thanks in advance for any advice.