Building Speaker Cables

And here all this time, I thought all speaker connections were silver soldered. 

It depends if one is a Clamp Termination School or a  Solder Termination School.

I'm a do not use Banana Connector School, wire is connected to Chassis Mount and Speaker Terminal. 

That is the most cost effective and most unadulterated method. 

My thought process is that the T-14 cable is silver coated copper and the silver would be  prone to tarnishing otherwise I would directly wire into the Amp 10.

Don't know your definition of "overkill" but soldering is not necessary with those connectors and that wire, and you will never reliably discern any sonic difference/improvement from doing so.  Coat the wire and connectors with ProGold, use the set screws to secure the wire to the connectors, add your heat shrink, and enjoy your new cables.  BTW, if you ever decide to upgrade or change your speaker cables, you may be thankful for how easy it will be to repurpose the connectors if they are not mucked up with solder.