selling atlantis (too big) need suggestions pls for a versatile allrounder

[paddleboy17]

yet if you're too far forward you also can place too much upper body weight unnecessarily on one's hand/arms/shoulders too, thus causing more fatigue and strain....

This has not been my experience. 

It has been my experience that what causes to much weight to be supported on one's hands is to have the saddle tilted too far down.  The saddle is supposed to be level.

I tend to run my saddles slightly nose down, where slightly is 0.5 to 1 bubble on a carpenter's level.