The steering shaft is only needed on '96s and early '97s because the shafts are shorter. If yours is mid '97+ then you can just loosen the clamp around the shaft and slide it down. I think it's a good thing but that one's up to you.
For a 1" BL (and maybe even a 1.5"), you can just remove the lower radiator shroud which is held on by clips and takes seconds to remove.
If you get a BL, keep in mind that if you plan on adding off road bumpers, you'll have to make mods to them (or order them custom like I did with my rear).. or put up with a gap. 4crawler sells brackets to lift the stock front bumper back up to the body, but it only works for '96-98 bumpers. You can call him and ask if he has started making them for '99+ bumpers yet. The rear stock bumper is connected to the body so you're good there.
Put your truck's specs in your sig. It helps us to answer questions like this because there are some things that are year and engine specific.