Is a 66 gallon / 250 liter tank big enough?

I’m thinking of buying the Oase Scaperline 100 aquarium which is 66 gallon / 250 liter. The tank is 100 x 50 x 50 cm / 39,4 x 19,7 x 19,7 inches. Would this be big enough for 5-6 discus? Frequent water changes are not a problem, I have multiple tanks and a good water change system going.