That is a little much, but you won't have any problems once in the
air. It will be very stable in low wind. The ground handling will be
tricky if there is much side wind wanting to lift one side and tip the
plane over moreso than a flatter wing.
I don't believe it is worth the time to try to cut and reglue. I did
the same thing on one of my first planes when I put the 2" block
under each tip instead of just one to set the dihedral.
The turns in the air will be more flat using the ailerons, but it will
turn nicely using rudder only.