Yeah keep them smaller (perfectly doable with sativas as well, top/fim/lst/sog/scrog/bend/pinch/etc) and use only HPS with a good reflector (we call'm depth-beamers, no idea of the english word for it, sorry) from the top. Some good reflective foil or mirrors even from the sides and you can have dense buds from top to bottom.
I.o.w. if I were you I would focus on growing more efficient and put quality over quantity, rather than going for more yield by adding more lights (it's not a race, I don't even get why you want to prove anything to others in a forum). You got less than 0.5 gr/w, I have no problem believing that. And it leads me to thinking that much of the wattage you are using has zero effect. I would try to get my hands on a light meter, pretty sure it would pay for itself.
Its a learning experience with hydro....Does take moretime and effort but the quality and taste is allot better then soil.
Well, that's a matter of taste and opinion and a whole other discussion by itself. I'm pretty sure your hydro yield doesn't taste nearly as good as my 100% organic soil grow, but I also switched to hydro recently and taste was not on my list of motivations for doing so (hydro = more control = faster vegging + bigger yields).
Anyway, good luck with your next cycle.