welcome to the site, please look around.... tons of info... you dont need a $1600 kit
you can get the springs themselves and a hangar pretty cheap... a lot depends on how much you are willing to modify....
my truck is lifted 4" with procomp lift springs, sure they arent flex monsters, but i got them from a friend for free, and bolted them on, no modifications to anything (other than extended brake lines, but i already had those)
you can get into hysteer, and relocating mounts, and new hangers, and so on.... or not... its up to you and your budget. i have never heard of people running the f150s up front... honestly, its really the same as running any other spring though, if you want a flex monster you will have to do some modifying, if you want a street queen, you may or may not, all depends