As adults, probably not. Texas and Cuban males get very aggressive and both pretty large, the 90 isn't that much room for them to escape each other. In a 4' tank, I would pick your favorite of the two, and then stock around that. You might be able to pull off some smaller cichlids that won't challenge the big guy for dominance. Like, Texas or Cuban with a group of convicts or sajica. Might work, if the bigger fish doesn't mind sharing. No guarantees though when mixing cichlids.