New pool advice

I was quoted 8000 for a automatic cover because i was told it will save on cleaning and chemicals and water with a automatic cleaning will will not take much to keep the pool up. But more important i have a 4yr and 9yr boys. My BP gave me a another choice using the money to buy in ground cleaning jets and Aqua logic and Turbo Cell SWG. The pool will be 15 x 30 with a 6x6 pool spa in the rectangle pool. 4 ft on each side and 5 in the center. Then use a manual cover or fence. I not sure DE or cartrige filter. What do you guys think

If it's square, make your spa 7'x7' instead of 6'x6'. Otherwise, you will be short on leg room.

Thanks for the advice on the spa. Do you think 6 jets will be enough.

I'm no expert on that. Probably a matter of personal preference. I wouldn't do any fewer than six, though.