I would add light and a glass top to the tank, and do daily top ups with RO. Other than that, sounds okay to me.
Just a side comment, I have two Hagen 802s in my 72g bowfront. They churn up the water quite well in a tank that size. Am wondering if you have these 802s on full throttle or have them turned down. If full throttle, it must be quite a washing machine in there
