Just watch to insure you properly protect the pool area with the appropriate fencing. This is certainly the least expensive option. The more continuous look that you can maintain, will enhance the value of the pool and your home. Only use pressure treated wood, PVC, redwood, cedar or other insect retardant material for your deck to insure long deck life. If using PVC, insure none skid surfaces are added.
Nothing is more unsightly than a bunch of exposed posts and decking around an above ground pool.
It allows air ciculation, but keeps the 'critters' out for the most part. It keeps the weeds down to a minimum. We have a 24'round above ground, and are currently building a pressure treated deck around it. Our deck is rectangular 32'wide by 36' out in length away from the existing house deck. This gives us 6' minimum of walking distance around the pool, and allows ample room for a table and chairs or chase lounges or a grill in the corners.