1. A method for selecting a seed value and individual weighting values for use in an LBIST system, the method comprising: determining metric values associated with a plurality of trial combinations of a potential seed value for a pseudorandom bit pattern generator of the LBIST system and potential individual weighting values for a plurality of channels of the LBIST system; and selecting an optimal combination based on the metric values associated with the trial combinations, wherein selecting the optimal combination comprises: identifying a set of latches in the plurality of LBIST channels; identifying one or more desired test states of the identified set of latches; for each of the plurality of trial combinations, determining whether the desired test states of the identified set of latches are generated by the LBIST system; and selecting one of the trial combinations in which the desired test states of the identified set of latches are generated.