I am looking in getting a d.e. filter system for my above ground pool. I was looking at the hayward d.e. preflex filtering system. I have a 36 ft diameter x 4.5 feet deep round pool (which is the water capacity of 34,300. Which model would be best for my pool I was thinking of the Hayward EC50C93S Perflex 1-1/2-Horsepower Extended-Cycle D.E. Filter Pool System. Please advise