Stocking northern and southern ponds is very different. If you give BG a big jump start on LMB up north, you are going to most likely end up with a heavily stunted BG population and under performing LMB.
Stocking FHM first with GSH giving them some time to build numbers, then add LMB, allow them to get some some size, say 8"-10" then stock BG. This should lead to a quality northern fishery.
Growth rates are very different from north to south so advice that is well suited for a more southern pond can be detrimental to a northern one.