SMB have proven numerous times to not control bluegill density. As predatory behavior, SMB will focus their main predation efforts on the more slender bodied yellow perch and tend to neglect the wider body BG to the point of prolific BG becoming over abundant and stunting can/will occur.

Reconsider instead of SMB, using LMB as a predator and then focus on removing appropriate sizes of LMB that produce the size of BG and YP for your goal. IMO it will be a real challenge to produce a high quality pan fishery using reproducing populations of both YP and BG without focused predation on the small 2"-3.5" BG. I think you may need to add hybrid striped bass with the SMB to try and control too many BG. As a result too few YP will end up as an occasional bonus fish will likely be the result. If the SMB-HSB combo does not do well at controlling the BG start adding 10" LMB to get the too many small BG numbers reduced and back to growing into 8"+ size categories. Eventually after several generations LMB will then be the dominant predator resulting in fewer and fewer SMB.

Pellet feeding too many over abundant small BG without adequate predation pressure and a focused small fish harvest often results in producing even more too many undersized BG due to more BG being reproduced and not eliminated from the community.

Great fisheries result from having the niches of predator and prey fishes matched or paired toward optimum feeding behaviors.