How to connect a BL setup?

[mt_enthusiast]

The UBEC has a really good block wiring diagram.

This seemed like a good thread to continue with the questions I have. I don't know too much about electric other than no forks in the wall outlet and red is positive and black is negative ;).

I'm using Deans Ultra female connectors with two battery packs, the UBEC, MGM Compro ESC, and a Feigao 7xl motor. Per Mike, I ordered the 3.5mm gold connectors.

My first question is should I shave down the motor wire ends so that these connectors fit in the gold connectors or should I just solder a small piece of wire to each motor lead and put the gold connector on the other end of the small piece of wire?

Second, the motor wires seem to be a larger gauge of wire than 12. Will 12 be adequate for all the wiring that needs to be done? I think so, but I'd rather be sure about it.

Next, I was thinking of using an extra motor clamp I bought from Mike (the small version since I bought it thinking I'd be using the 9L and not the longer 7xl) to house and protect the speed control. The MGM controller has small screws on the side, and I think it is OK to have these touch the aluminum since they go into the ESC's heat sinks. Can someone validate that this will work?