We are planning to have pool installed in our backyard but the problem is we have long backyard 60' * 18.3' and we have come up with below design to use the space at maximum. Please suggest if you have any good pool and spa design ideas.

1. Is 30'*9' pool is good enough for lap ? Pool width can be 9' max as we have to keep 5' space both sides. (fyi. I have kids 3 year and 8 year old)

2. spa size is 6'*9' , how many jetts are required for spa?

3. I am keeping pool layout more towards dining area side and not bedroom, keeping 17' deck space. Any experience/suggestions to improve here?

4. What will be the approximate cost to build this Concrete pool ?