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I had a multi-zone 3-Ton system by Daikin installed less than a month ago. If we hadn't opted for the multi-zone option I would have installed it myself.

We don't see the temp extremes other areas do out here in NW Washington, but so far it's been amazing. Each of the bedrooms has an indoor unit, plus one in the main living area. The system is also sized to accommodate the new addition we are starting on.

I'm hoping that we will be able to abandon our old NG furnace with this. System specs say it's good for heat down to -5°, but we shouldn't get anywhere near that around here.

I did the electrical, and if the outdoor unit provides power to the indoor unit with the lineset, it couldn't be easier. You're looking at likely needing a new circuit for power, and to be code compliant it'll need a disconnect at the outdoor unit and an exterior receptacle within 25 feet IIRC.

There was also a code change in the latest update requiring GFCI protection. Last I read, NFPA has pushed that requirement to 2023 because of nuisance tripping issues. I asked my inspector about it, and he told me that WA was likely going to make an exception in our state codes to remove that requirement. YMMV of course, so check your local codes.

In short, I wish I'd done this years ago.

Quick edit to add...
Consider what you may need to do to weatherize the outdoor unit. I think Ohio may need some additional frost protection, but I don't know anything specific about that.