dssur
+1y
there are almost no positives. Your truck will be lower but because the camber is so lessened and the spindles push the wheel out, your 17" denali wheels will hit the fenders easily while turning, and probably just under normal driving straight ahead.
Also, since you did not originally set up your front suspension to use drop spindles, you will find you have lost lift and will need more pressure to have the same ride height.
Depending on your tire size, you should not need drop spindles to lay out. Since you are going to be cutting off the upper mounts anyway to reset them for more drop, I recommend you clearnce the lower control arm to fit around the section of frame that it normally hits, and pie cut the upper arms to allow more drop and forget about spindles. If you are worried about camber at low heights, take out all the camber shims behind the upper arm mount, and align the front end. Camber, at least small amounts of it, is not so bad for tires, it is camber combined with TOE in or out that ruins tires.
you should also modify your driving habits to lift high only when you need a big turn. Thats where camber helps you, you can actually turn the wheel slightly to make most turns at lower pressure and while still tucking a little. I had a bodydropped mazda with 17's and no spindles, and it laid out, drove, and turned with about 70 psi in the front. For bigger turns I needed to put in 85-90, but at the lower pressure (and with shocks) it rode GRRREAT.