Your pH is fine but your hardness is perhaps a bit high for rams. That just leaves the temperature problem. if you want to try them, go for the 'original' colouring. Avoid gold ones and electric blues, along with balloon rams. These have been intensively bred to get the colour/body shape and are more delicate. Read up on sexing them, and study the shop tank to see if any have already paired up. Rams are substrate spawners rather than cave spawners. My Bolivian rams always used a flat rock.
One piece of advice I can give you - rams are earth eaters (that's what their latin name Mikrogeophagus means). I had my bolivians on a fine gravel substrate and the female got a piece stuck in her throat. After that experience I changed all my tanks to sand, and would never keep rams on gravel again. Or apistos for that matter as they too sift the sand looking for bits of food.
My apistos only chase the other fish when they have eggs or fry. And it's the female that does the chasing. She never actually makes contact and no other fish has ever been harmed.
Rams, apistos and flag cichlids do better with dither fish in the tank. These are shoaling fish which the cichlids use as a warning system - if the dither fish are out and about, it must be safe to come out of hiding. If there are no other fish in the tank, some cichlids regard that as a sign that there is a predator in the vicinity and hide. I have ember tetras in with my apistos with no problem, but I wouldn't risk small shrimps with any cichlid, including rams. I have full grown amanos, which are quite big - the female shrimp is bigger than the female apisto.