I recommend anyone to download powertoys, a collection of utilities, and to use the keyboard manager to remap the caps lock key to the backspace key and vice versa. The pinky distance is substantially reduced.

I use the split, column staggered iris keyboard. With another layer I can access any common key or symbol from at most one key away. Nicest thing is how the arrow keys, backspace, space, home, and end are right on the thumb cluster. I actually use the keyboard layout colemak dh but with the s and h in the same place as qwerty, otherwise this small switch gets me. Its way more optimized than qwerty, probably the best on according to what I read.