Originally Posted by rpenmanparker

This is settled science. No opinions about it. Saddle setback is not used to adjust reach. It is a totally independent adjustment. You have to get it right first, then you figure out what stem length you need. What is right for saddle setback? That is a hard one. It is about pedaling efficiency, power output, comfort, avoidance of injury to the legs and hips, etc. I like KOPS (knee over pedal spindle)...look it up. Others don't. Still others start there and use KOPS as a starting point gradually adjusting the saddle fore or aft to optimize their position.

Just try to get perfectly satisfied with your saddle setback without any consideration of where your can reach to in the front. Maybe just put your hand on the bar tops where you don't expect to have a lot of room. Concentrate on your pedaling. Maybe a trainer stand would help. When the saddle is right, then you work on the front end to get the room you need