Extra Level of Malediction Balanced?

[JCurwen3]

Do you think an extra level of Malediction enhancement (a +250% version) would be balanced?

Long-Range enhancement (p. P108) starts at +50% and steps up by +50% per level. Range penalties start at -1/yard (like a Regular spell); the next level uses penalties as per the Size and Speed/Range Table, the next level after that uses Long-Distance Modifiers (p. B241), and the next level has has no range penalties at all.

Malediction starts at +100%, and also steps up by +50% per level. It has the same progression - first spell range penalties (+100%), then S&S/R table penalties (+150%), then long-distance (+200%).

So my question is whether a level of Malediction at +250% that has no range penalties is balanced at +250%? Or might there be pitfalls?