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I am also working on this, I have a D3 max build, but working on the 'other' stuff. My suggestion is to not modify anything until you are gear maxed out. Then check back. This is a fun build.
A House would be your best bet for a weapon on that build. I tend to put a loud brake on it and then build for CHC/CHD. The brake helps to draw some aggro so you can tank while your team does DPS.