I do 100 push ups a day. Sometime not all at once. 20 here and there. As long as you do 100 a day you'll be good. I started doing this after I watched a 30 day challenge on youtube.
YouTube
Yes of course you can have lift with using the 5100 and your stock front springs. Mind you thou, ride will be a bit harsh when you preload the springs. Search 5100 and read up on all the thread about it. Which notch to set and everything.
Stay away from spacer if possible.
For a mild lift, get Bilsteins 5100 all around. Shocks do not lift the truck, springs do. on the 5100, there are notches to set the spring perch. Those notches can give you anywhere from .85 to 2.5 niches of lift with stock springs. To get a better ride...