If you are working with an Intex AGP, you will quickly find that the stock valves, fittings, pump/filter all are grossly undersized for your pool.
As Jason has noted, the head loss in the stock fittings etc. is rather high. This translates to lower flow rate, which means filtration is inadequate at best.
I have found that hard plumbing the pool helps you keep it cleaner, so it takes less time to care for your pool.