Thrive has a lot of synthetic PGRs, do you use that? Kelp has natural Gibberellin which is a PGR but it is in very small amounts and is natural.
I think I may have a hard time hitting that 5oz. in this 8/4 experimental grow? They do seem to be maturing faster though? When I have compared harvest weight of all of my grows auto and photos on a time vs. yield basis they all seem to run really close. If this proves to be the case on this 8/4 light schedule then the only thing gained would be the ability to grow more strains in a given time. The plants are also smaller which can be a real advantage for people that need to grow in tight hidden spaces.