UPDATE: No, we can't give you the answers you request because we don't know what kind of system you plan to build, how big of a system, full off-grid/partial-grid, what equipment you have or want to get, and a myriad of other things need to be filled in. Everyones build costs different because we all do different things.
Secondly, you need to post this as a new thread as it does not pertain the content of this thread or section. Post in the Powerwalls section or general electrical section.
@Jeremy: is that more informative?