EDIT - Doh! You were talking about the seat tube angle. Forget everything I said below about the steeper head tube. Nonetheless, I don't think a 1° steeper seat tube will make a noticeable difference in weight distribution, and still think using a reference like The Custom Bicycle to help you with your fit would be useful.

I don't believe the 1° steeper head tube angle will make any noticeable difference in fore-and-aft weight distribution, particularly in the proportion of body weight on the handlebar. I think your fit problem and the wrist pain you're experiencing are more related to being too stretched out and an error in the angle your arms and wrists are to the angle of the bar drops. The wrists should be straight. If you hold your wrists straight before you touch the bars and the grasp the bar at the spot where your wrists are straight, you have found the "correct" position. You may have to change change the angle of the drops slightly relative to horizontal in order to feel comfortable.



What the change in head tube angle will do is affect the steering. Former framebuilder Dave Moulton has a blog piece on head tube angle and steering that's worth reading. He also has another blog piece on trail and fork rake that's also pertinent, since head tube angle and fork rake (or offset, as some call it) determine trail.

The Custom Bicycle by Kolin and de la Rosa offers priceless advice on setting up a quality bicycle, and has several series of photographs with the subtle differences between setting up a bike for comfortable all day rides and being in pain after an hour or so. I've found it an invaluable tool in setting up my bikes.