My thoughts are that the BG and LMB would most likely give me the fun for kids pond that my wife would like to have. That goal would be bass around 1-3 lbs and gills hopefully over 7", I would plan on culling bass and gills depending on the condition of the fish.
Skunked, you know what they say ... if Momma ain't happy ... ain't nobody happy! What she wants is worth considering ... but I agree. You need 2 ponds. That said, I think you could add 1 or 2 crappie per year in a BG/LMB pond where they could attain really good sizes, perhaps trophy sized. Just treat them as a bonus fish that you might catch from time to time.