[dsraven]

here is what I mean by the pedal lever length.
if you lay a pencil on the edge of the table and hold one end so it can pivot from that end, then move the other end a couple inches up the table and stop. you will see the end of the pencil that you moved was moved a couple inches but, if you look at a point say 1/2 way up the pencil length, that point didn't move as far.
anyway, you may find it works great like that but if you find a little pedal movement makes to big of a difference you could just lengthen the pedal arm later.