Now, my transceiver does have a separate ground lug. So now why am I supposed to run a ground braid from my radio through the wall to this post??? Wont my radio then have TWO separate paths to ground? I thought that was a nono.
Absolutely will put you in a ground loop, a very dangerous and noisy ground loop. Most5 hams place themselves in a ground loop intentionally like you are going to do. Why, because codes, best practices and physics do not apply to ham radio operators. Hams just make it up as they go along.
Where you and most all hams go wrong is you intentionally do not comply with electrical codes, especially NEC 250.94. You failed to bring your lines in where the AC service enters creating a single point ground. All other providers learned this long ago and why it is written into electrical codes. Your CATV, Telephone, and TV antenna installers must comply, they have burned down to many houses and equipment.
So don't worry about, take your chances and ignore codes. While you are at it make sure to put your mobile radio into a ground loop by connecting the radio dc negative directly to the battery. Guaranteed to have a lot of noise, and someday when you start the car, burn up your radio power wiring and coax.