guianacara gaeyi

So i contacted of my LFS for Bandit cichlids, they said I could chose one of the following: Guianacara: Owroewefi 1” to 1 ½” Geayi 1” to 1 ½ “ Dacrya 1 ½” to 2 ¼” Spenozona Suriname Red Spot 1½” to 2 ¼” and one back up choice incase the other one is sold out. So my questions are: Which...

SOUTH AMERICAN TANK 1 x Oscar 2 x guianacara gaeyi 4 x Silver Dollars 2 (3) x Pimelouds Maculatus Be too much for a 120 gallon dual overflew, with a trigger 36 sump? BTW need recommendations for cool natural substrate, plants, and rocks