I was originally hoping for a fiberglass pool. Due to setbacks on my property the only size fiberglass i can fit is a 10x20. I can however fit a custom pool of appropriately 16.9ft x 22ft. Is either big enough. Should I go with the bigger custom over the smaller fiberglass. We have 5 kids. They dont really care what size pool as our vacation house we rent each year has an inground pool smaller than 10x20 and they could spend 12 hours a day in it. Any thoughts would be great. I am having a hard time trying to decide if one would be better. Thanks.