Plunge Brand all-in tub with different chiller

Without diving too deep, I bought the Plunge brand "all in" unit with the integrated chiller about 2 years ago (because clearly I hate myself and like to buy trash).

Fast forward and I'm at the brink of maxing out the extended warranty money, the unit has broken countless times, their CS is truly impressively laughable and they have made a virtually impenetrable fortress around anyway to talk to anyone that gives a shit.

Here's my question. The tub has two intakes and two supplies, they yoke together at the pump. The all-in unit has everything "built in" to the tub but serviceable and removable. I'm very handy, a contractor by trade. The tub itself is great.

Is there a great, stand alone chiller unit that I can scab into the existing plumbing? It does not need to fit inside of the tub recess. I've begun the hunt but want something that mimics some of the Plunge capacity, with WiFi, integrated filtration and ozone packed into one machine. I don't want 2-3 different contraptions connected here/there. It seems there are way too many to chose from.....

Thank you all for any help! If anyone is remotely considering a Plunge brand unit you are welcome to PM me to hear my experience.