In my experience I suspect dense GSH populations negatively affect YP populations...I'm not sure why - but I've witnessed it on my main pond fishery to the extent that I'm creating a new fishery on a 3/4 ac pond dedicated to YP and WE. Other predators [HSB, SMB, HBCP, WE] which may also be responsible for the impact on the YP population in the main pond fishery, but I found the timing of my heavy GSH stocking and corresponding immediate impact to YP angling interesting enough to mention it here. I stocked the GSH only to relieve pressure on the YP - good intentions....
IMO GSH will not negatively affect a LMB fishery - even a 14" LMB could hammer an adult GSH due to their fusiform shape and lack of spines. Rah you have nothing to be concerned about.