I hate to give you a non-answer but here's what I know:
The stock rims are
Rims | 17x8.5 forged aluminum +34 offset (backspacing of is 6.1 slightly aggressive) |
So, what type of look are you after? What size tire are you gonna put on that rim?
I use the website
F150 Wheel Offset Explained | How To Choose Wheel Offset For Your Ford F150 as they have a bunch of videos showing different rims actually on the truck and user submitted pics of their rigs with all the tire/rim sizes shown. They also used to have a on-line calculator to help you determine what would fit but I couldn't immediately find a link to that.
They sell tire and rim packages but I have no idea how the prices compare to others. But that doesn't stop me from using their website to learn and shop elsewhere.
Good luck and as always post some pics!