Getting off grid with heat pump will be expensive if at all possible for a 2000 sw ft home. While heat pumps are efficient, they consume too much energy for ordinary residential solar system. Idk how much roof space you have but probably not enough, you'd have to build a ground array too. My friend has a 25kw system which covered every inch of his roof + a ground array and a wind turbine to power his geothermal system, even then he has a wood stove to assist the system.

Hot water is easy, a hybrid water heater is the way to go. Not only does it use very little energy, it will also keep your basement dry and cool. A normal solar system can easily deal with it.

Getting minisplits are expensive because every fucking contractor wants your rebate and give you fuck you quotes. My neighbor was given a 26k quote for 8 minisplits and he ended up doing it himself for 10k + hiring an electrician. You can buy DIY Mrcool from home Depot or Lowe's for cheap and doing it yourself is easy if you don't mind drilling a hole through your exterior wall. I have a 3 ton unit for 2 years now and it works fine but fuck, I got a fireplace insert because it's on for like 12 hours a day.

One thing I wished I knew before getting a solar system is that MASS SAVE provide Interest Free loan for the batteries!! Use it!!

Here's what I have so far: fireplace insert, 3 ton Mr cool universal heat pump, 7.6kw Tesla solar with 1 powerwall, electric water heater (planning to upgrade to hybrid eventually). In the summer, my solar system generate 150-200% of my power usage but only 10-15% in the winter due to my house being surrounded by trees. The only way I'll go off grid is a huge solar array + wind turbine.