Looks good....
To keep things simple with mine I just bring along a couple of 25-foot RG cables and using a spliter I hook both up to the TV connection on the pedestal. Then I hook one up to the trailer CABLE Connection and throw the other one under the trailer.
Then when we are sitting outside I just bring out my TV from the inside which is sitting on a cabinet top and sit it on a outside table and hook it up the second 25-foot RG cable...
Then when it rains or we leave the area I just sit it inside the trailer locked door.
I always wanted to install a swing-out mount on my 5th wheel just inside the storage area...
Would look something like this...
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The swing-out arm would be installed on the inside storage bay wall which would allow you watch TV with it inside the storage bay or swing out like shown above. The beauty of this is if it starts raining or you walk away from the patio area you can simply swing it inside the storage area and lock the outside door...
As it turned out we never did anything with our 5th wheel and it still sits near the edge of our woods here and we use it as a second bebroom for visiting kids etc... I never had a truck big enough to tow it safely
We watch some TV in our Patio now with the OFF-ROAD POPUP trailer but one of the downsides is at popular camp ground with lots of people everyone that comes by stands in the road and watches your TV... Not that I am agin any of that it just feels strange for strangers watching your TV set and talking and all to each other what they are seeing and we are sitting there drinking a Texas long neck haha... Kinda weird sometimes...
Work great in the woods too - Gives the Squirrels something to tell their grandkids about I guess...
My other wood's friends can watch HDTV too I guess...

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Roy Ken