yeah, i really miss GM too. i'm sure he's either owned a oceanview before or knows someone who has owned it.
i'm currently a lurker at cichlid-forums, don't have enough expertise to post anything (barring minor comments). i go by 'triazo' there. as you said, there is a huge collection of great articles and experienced people on the forum.
i finished assembling my 75g last weekend. the labs are currently enjoying it by themselves (along with the clowns), but their days are numbered as the sole occupants. as you said, i chose the mbuna simply because of their ability to put on colorful dresses for me regardless of sex. and also i'll be keeping monomorphic ones at that too. i thought about mixing some protomelas taeniolatus for their red, but dropped them eventually.
a stag tank is a great idea, done by many hobbyists. but instead of culling the females, you can possibly sell them on aquabid. good luck with making the background. its not really that hard.