Personally, i don't "feel" the club head more with lighter shafts.... going from a 130g steel shaft to a 85g shaft is a HUGE difference that i wouldn't recommend to anyone without going through a full fitting with a certified fitter.

As for the driver, the same idea applies... a fitting is the best bet. The CK Orange is a fairly stout shaft that is mid launch and low spin. It seems counterproductive to go lighter in irons but heavier in driver. It really depends on how you prefer to flight the ball, but the best way is to try various shafts on Trackman, Foresight or other high end monitor. Depending on your speed, you want a shaft / loft combo that gets you in a 12-14 degree launch window, with between 2000-3000 spin rate. Too low of spin, and you will lose control and ability to keep the ball in the air... too much spin and you will lose distance.

+1 to Brock on the irons...I had both hips replaced and was always in a 120g shaft....decided to go lighter to deal with the hip, back, shoulder issues...however, after hitting 85g shafts for 5 months, I can't feel the club or put a solid strike on the ball twice in a row, and if I do, it's purely accidental, and the only way I can tell if it's a good strike is watching the result...I feel nothing (Playing T200 and T100S blended set). I switched out my T100S irons to Project X LZ 6.0 shafts (120g precut) and voila! I feel like one with the iron again...