New build in Southern California.

What’s up guys I have a new pool build and I’m a new-be…. I dug out the pool myself and installed both spa and pool drain . Now rebar guys are present and doing there thing. My question is regarding the spa. I planed your run 1) 1” return line off my pentair variable pump. And break off and make a manifold with one for low back and one for the feet on each side . Will this work? I’ve seen a bunch of videos where there introducing air pump , is this necessary? Or will it simply work how I’m planning to doit? Thanks in advance.1E64DB9D-B8A0-42CA-AAF7-0DDBBFDF0864.jpeg2BAB9D24-A14B-4D87-AD28-B900A4D2342C.jpeg
 
Happy New Years Everyone!

Finally the rain has stopped in southern Cali. I removed my tarps and not to bad erosion. I plumbed my returns on pool and my drains. Now on to the spa. I was confused about air in jets or no air in jets. We figure we want to use them but I’m kinda dumbfounded on how to or what to use for the jets. I want like 3 stations for feet and lower back and shoulders etc . I kinda got that down but what do I use to pressure the jets ? What’s my most economical choice? I don’t wanna get to fancy. But I do need the therapeutic of it. Please enlighten me on what I should purchase . I also seen some tees that are tapped into the returns with the air? And do I need a auto fill? Also I did one large niche in the big pool , how much from the face is it supposed to stick out from rebar? Please help me out and TIA!
 
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