If you have large numbers of 6-10 pound bass and it is a 35 acre lake, I think gizzard shad could be a viable option. I am a big fan of diversified forage. Rather than relying on one or two species, I like to stock as many as I can. Many times not all will survive or thrive in a certain pond for what ever reason. But you cannot have too many different species for your predators to eat. One year one forage species may have a poor year while another species may have a boom year. If you only have 1 or 2 forage species, there is a no back up option. If it was me, depending on your finances, I'd look into stocking multiple species. I am not intimately familiar with the habitat your lake contains, but lakes of that size usually have more diverse habitats than smaller ponds and therefore have higher odds of supporting multiple forage fish species. I would look into stocking both species of shad, golden shiners and lake chubsuckers.