the need to physically go to where you can test ride a bike with ,
generally what setup you want cannot be overstated..
Go to a bike shop and try some drop bar bikes ..

you have a upright position, but still complain about hand pain..
one thought.. just deal with the multiple hand position thing, separately..
Trekking bars, well padded with thick tape or the premium grip/bar end set
Ergon makes a good product, GC3, a good one..

drop bars as high as the saddle will put more weight on you hands,
you might need a bunch of push-ups to strengthen
the muscles that will hold up your torso with your arms for, hours....

Or [cue the recumbent bike owners]