Satellite connection for 21 FBS

I recently purchased a North trail 21 FBS TT. It comes without a external satellite connection. What would be the best place to run the satellite connection to the outside of the trailer? ( Through the exterior wall or floor?)

When my bro had a TT he added a line through the wall. It worked out well.
You can buy an RV specific through the wall receptacle like THIS ONE.

Peace
Dave