Yo Scruff
Trout and BG will harmonize, but Trout will graze pretty heavily on your BG fry, which is not a bad thing.
LMB will prey on Trout if the size is right...fusiform and high in fat - LMB would feast on the troutdogs.
LMB size range should dictate the size of trout you'll need to stock. I would think 14" trout would be safe from any bass under 17"....but I may be wrong. PB mag just had a pic of a 10" GSH in a modest sized bass...tail sticking out of his maw. They are eating machines.