May have made one mistake...TBD...I put one (singular) 10" white bass in the pond. Their mouth was bigger than the other bass I put in there so maybe they can help thin things out.
Not really a mistake if you only stocked one. After all, it does take two to tango!
White bass do prefer a different selection of forage compared to black bass. So it shouldn't really compete against your stocked LMB. I definitely would not let anyone stock any more white bass.