For a good fingers shooting setup, you want a bow that's longer axle to axle. Ideally over 40" but some can make it work with shorter bows, depending on their (shorter) draw length and experience.

A higher brace height. A fingers shooter imparts lateral oscillation to the string on release. A higher brace lets the arrow clear the string sooner so the string will interfere less with the arrow's paradox.

Some will say otherwise, but you want neither a whisker biskit nor a dropaway for fingers shooting. The arrow needs a contact point on the side to help it go into paradox. You need something like the Golden Key Futura Star Hunter or Huntmaster, or a flipper rest like the Cavalier FreeFlyte. The NAP Centerest works well also and is very inexpensive. The old springie rest is still being made by GKF, it's also dirt cheap and it's darn hard to beat - as long as you limit yourself to shooting feather fletched arrows.