Take a look at your electric bill at all four seasons and find out your needs.
I don't recommend doing anything unless its a grid tied system with the hassling and permits. A portable solar generator system will turn into a "Chasing Numbers Game" to make it look like you're breaking even.
I track energy saved on a portable generator I use to power a crock pot and a rock tumbler for about 200 kWh this year. This will save me $40 real dollars in electricity. After perhaps 50 years, this will have paid for itself.
Upsizing to power half the house seems like a great idea, but the devils in the details in the implementation. Look at "
Same System Different Area--Huge Difference " in my signature block. Massachusetts is not a great area for solar like I live in, Arizona.
My power bill is 6 times the price in the summer for the air conditioner, and that is bad for 4 months of the year. If you have loads like my 4.5 kw air conditioner that you can save money if you can transfer these to solar; easier said than done. They'd have to be measured somehow like a kilawatt meter. It'd be best if these loads were steady year round, and at a power level that your solar can provide. Aside from the AC, I have a Tesla that charges at up to 11 kW, and that is to much to build my system around.
I have three setups, two of which I built: My RV and a portable Generator. The third is the 10 kW system the contractor put on my roof.
The portable solar generator has a 2.4 kWh battery and a 1 kW inverter, so I can run some stuff, but not a whole lot.