Kudos on the whole DIY aspect, but if I owned that pool, I would cherish/use it not hide it. Seems like it would have been easier and better to teach your kids to swim. My kids grew up with a non fenced pond in the back yard and swim like fish.
Surely you are not falling in-line with the whole wussification of America syndrome are you?
Anyhow..... looks like you are doing a d@mn fine job. No doubt it will look very nice when completed.