The technical data sheet gives you the usage, efficiency, and the calculation of BU based upon your desired sensory target. Having never used the product, I cannot help you with the accuracy or experience in defining the target. Further, since this is a post fermentation addition, I do not think the program is set up to account for bitterness from cold side additions of hops.
My recommendation is to set up a spreadsheet based upon the calculations presented by B-H and follow their instructions as far as the percentage of BU which can be added via their additive.
In reading this, my concern for anything which has a focus on hop flavor is the reduction of the aroma and flavoring compounds from the hops. For anything where the hop addition is pretty neutral, this may be a pretty good product. For something like this, I would start at about half of the maximum they recommend and then making adjustments in subsequent batches based upon how your sensory evaluation dictates.