Not to sound like an *** here but based on your questions i would say dont touch a thing, pay the money and have a shop do it. if your still bound and determined to do it yourself, well first of all, upgrade the brakes so you can stop after you add all that power, second forget building the engine, buy a crate motor direct from ford, replace the trans with something made for the power of the engine and dont forget the gears as well, they likely wont take the abuse of the new motor either.
now to explain, the crate motor is a ford part, comes with a warranty and is a proven design and often cheaper then throwing parts at a pulled motor to bring you to the same power. depending on your dealer they likely wont void your current warrenty as you are dropping a ford engine in, installed by them, the brakes were explained above and the trans and gears come from the factory built strong enough to handle the abuse most drivers will dish out, but not strong enough to handle doubling the power, they will work if you dont get stupid but its a time bomb just waiting for the worst time to break.
My dealer is great even an oil change means my truck is washed and cleaned inside and out, any work more then 1 hour and free loaner, and fords best, any aftermarket installed by or thrue them, they cover under the warranty no questions asked.