Depending on what else you stock, 6 geos should be fine, they do better in groups. Pike cichlids are apparently great in community tanks where nothing fits in their mouths.
I'll look more into dwarf pikes, chocolates, and those True Parrots. I am pretty set on a community. I just love the activity and vibrance of a community tank. I love to watch the fish interact with eachother. The Parachromis and pearsi look pretty cool! I also looked into doing a sump. I feel like it would be cheaper in the long run than the canister filter. If not cheaper, then surely more effective. I'll take a better look at doing a sump. I'm not in any rush for any of this. I probably won't have all of this set up til close to the End of July if I'm lucky. Oh also the only reason I would get 2 heaters is that's what I saw suggested, but if one's enough that's awesome cause that'll save me $50 and put less stress on the energy bill! Thanks! Also the aquarium doesn't have to be exclusively cichlids. I looked at maybe doing small community catfish, bichirs are cool too. I won't discount any ideas you throw at me really. I'll look into them all. I have much experience to gain, and who knows maybe you will introduce me to a new fish I fall in love with. I really wish an arowana could fit in a 125.
I think my only fear of the sump was drilling holes into the aquarium. I'm not sure if it's necessary but I definitely don't have the tools for that. If I can do a sump, I'll just go all out with it. You're right, I'd much rather clean out a filter sock than lug around a big ol canister and deal with possible leaks/floods. You're right about the parrot. 15". The Delhezi looks pretty awesome! Thanks for your help and suggestions by the way.