Critique my choice in suspension parts

It's an iron cross bumper, big heavy lookin mofo

 

hey guys,i really like some of these lift setups. this leads me to my question. i have a 15 acc base 4x4 5spd. i don't and can't afford a real nice lift. i would and can afford a bilstein 5100 package. i want to level the truck out but don't want any problems. my thinking is ,5100's up front set at .85,5100's in back. keep the stock steel 16" wheels with bigger tires. how much larger tire can i go without issues? i have the stock 245 75r 16's. i know this isn't going to be a cool setup, but it is a start, and should be cheap. any input would be great' thanks