so do you guys has any good recommendation on 01 or 02 fork @ 80mm travel with disc mount? which brand & model is durable around 3.5lbs?

btw, i am thinking to add up a few spacers between steer tube and stem, i finding myself have shoulder sore since i am leaning too forward. i have longer legs and short torso. (my height is 173cm) would it be a good idea too add more spacers or change a shorter stem with more angle on it? will my bike steer different when having a shorter stem? what is the effect of a shorter stem and a long stem? will my bike steer different?