Some bars just don't work well with ergo levers. Having a fairly long reach up to the thumb button from the hooks is normal. With small hand like mine, I always have to reach up to get to the thumb button.
I set the bars so they are comfortable in the hooks first. That's becasue ai do a lot of long mountain descents and that's where your hands need to be. After that, I set the brake hood, so the area where my palm rests is either horizontal or angled up just slightly. The difference between angled too hihg and too low moces the band clamp only 5mm.
I like the current Easton EC90-SLX3 bars. I avoid any bar that has a substantial rampdown angle from the horizontal top section to the brake hoods.