I'm currently planning a 120 gallon tank (60' x 18') with the following stock:

5-6 O Tapajos sp. Geophagus 'Orange Heads'
20 lemon tetras
10 golden pencilfish
8 julii corydoras

I would also like to add a mid-swimming cichlid to the mix, and I'm trying to decide between a few angels or a pair of rotkeil severums. Which would be the better pick? I'll have an FX5 on the tank and decor will consist primarily of manzanita driftwood with no plants.