May have to settle for 1HP. It won't make a lot of difference, so long as you run on low.

VS pumps depend heavily on surge-sensitive and EXPENSIVE electronics. They do well in places like California, but not so well in places with lots of lightning related voltage surges, like Miami. And even in California, a VS pump won't usually last as long as a 2 speed.

A Polaris cleaner both vacuums up debris (leaf bits, dead bugs, flower petals) AND it sweeps the pool, disrupting developing or emerging algae biofilms. In Miami, with no screens, you DEFINITELY want one, if you don't want to spend 20 minutes a week vacuuming.

Bubbles, for kids? Are you sure? From what I've seen blower bubbles hold kids interest for about 5 minutes. Then it's all 'been there, seen that'!

BUT . . . blower bubbles are not pump flow dependent. Jets are. If you want spa like jets, that will require a MAJOR increase in pump size, piping complexity, and cost. All very do-able, but you are moving away from your low cost very simple system.

Again, spas (and spa like functions) are -- from what I've seen over the years -- interesting to kids only for a brief initial period. I've only seen continued interest in spas in adults . . . and teenagers 'on the make'.

I've seen motel spas jam-packed with with young teens at regional swim meets, but that's a bit different: 1 part "It's NEW to me", 1 part "I'm really sore from swimming that 400 IM", and 1 part "Can I squeeze in next to Suzy -- she's not going to be fast much longer if those things keep growing, but I sure do like how they look!".