Hi and welcome.
A few pieces of advice: Learn and master the BBB system before you install an SWCG system. It's MUCH easier to maintain a pool with an SWCG if you can do it easily without one. And you may find it's so EASY you can't justify the cost of an SWCG.
For me, as much as I liked the idea of an SWCG, I couldn't justify because the cost plus the ease of pool care of our BBB system made it unnecessary. However, when we began to spend more time away from home in the summers, it now made sense to install it. But I had 13 years of pool care, and used the BBB method for 11 or 12 of that before I got the SWCG. I STILL use the BBB method, only my main way of chlorinating is the SWCG.
Second, VS pumps are sexy but they are also very, VERY susceptible to lightning and power surges so without a proper surge suppressor designed for it...it could burn out the electronics. OTOH, I haven't seen much that shows that VS pumps have a significant (emphasis on "significant" ) energy advantage over 2-speed pumps. Is it worth the extra $150-$250 it costs more than a 2 speed? I just don't know, but I run my two speed on LO about 10 hours a day and that's more than enough to filter, run my SWCG, and feed my solar panel.
I don't know much about Pentair but their pumps and filters are considered among the best. I know nothing about their SWCGs, having an Autopilot myself (and very, very happy with it).
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