Just a few comments about cichlid water parameters.
T. meeki and T selvini are both hard water central American cichlids, referring a pH around 8, but will tolerate lower.
H severum and M festival are South American and Amazonian soft water species preferring a pH below 7, some will sometimes tolerate higher, pH and harder water, temporarily but...often end up with HITH after too much time in hard water.
Jewels and acaras are very adaptable
The Ctenompoma also prefers soft acidic water, and sometimes develop bacterial infections if in stressful parameters out of norm, and if kept with certain boisterous cichlids.
You may want to check out the parameters of your tap water, before cramming species together, especially if your parameters lean too much one way or the other.