I would vote away from putting either of the pleco or bichir in with mbuna. Mbuna tend to pick at any larger fish such as the bichir, and i never have had luck with plecos in mbuna tanks either, due to the same reason. If your set on mbuna i would recommend a smaller species of synodontis, or some of the more aggressive loach species. As far as a hob to recommend, go with the aquaclear 110 as someone prior statedWhat if i have 5 yellow labs
5 kenyi
5 undecided african
1 bristlenose pleco
And 1 senegal birchir