That looks great - Have seen a few of similar installs using the grill mount. I did this as well for awhile but the only down side i had was when we all decided to leave the camp area at the same time. I eventually got mine setup so I could quickly move the LCD inside the trailer or inside the pass-thru storage.
On my next one I will use the pass thru storage area with a flip down mount I think. Then we can just shut the storage compartment door when we leave the area.
When using the OFF-ROAD POPUP we just put a TEE SPLITTER where the cable TV hooks up and run another RG cable under the trailer to the awning area. Then we just sit our LCD TV on a portable table top under the awning. Very easy to move the TV inside the trailer when we need to all go away for a bit...
I'm not a big must have TV outside all the time but have to admit it is kinda neat to set around the fire and watch TV after supper especially with friends visiting the camp site.
I suppose even the squirrels and bears like to watch alittle of NCIS once in awhile...
My camping buddy likes to watch HDTV in the woods ...

sample photo from google images
Roy Ken