5: 1: 4.5
isn't a 2: 1: 3 ratio or similar a bit friendlier ? i agree a higher n won't hurt here though. that is a lot of k.
Actually 154-30-132 works out to a label N-P-K ratio of 2.2-1-2.3 since only 43% of the P and 83% of the K is in a usable form by the plant.