1. You probably will run out of payload capacity on a F150 before you reach the tow rating. Figure the weight of any passengers and gear in the truck and subtract that from the tow capacity, including the weight of the weigh distributing hitch you will need. A good guess for tongue weight is about 13% of the trailer's weight so an 8,000 pound trailer would have about 1,000 pounds of tongue weight.
2. You could be looking at dry weight which is irrelevant because no one tows a trailer dry. You could be looking at the Unloaded Vehicle Weight, you could be looking at the GVWR. These are all different, sometimes by a lot. The one to watch to be really safe is the GVWR.
3. Not all trailers come with TV antennas. Any TV antenna will pick up HD. An HD antenna is just marketing.
4.Most trailers do not have any water filtering but it can be added. If they do have it it's usually just to a faucet for drinking water
5. You mean 30 or 50 amp, not 60. Some trailers have a 30 amp connection, some a 50 amp connection. Most any park that has 50 will have 30 too. Adapters are available. The only real limitation is if you get a 50 amp trailer and go to a park with only 30 A and want to run everything at once. You can't.
6. Same with RVs. Buying used will save taking the depreciation hit.
