I think I'm pretty similar to you in my approach - reducing dependencies rather than going fully off-grid.
I'm surprised to hear that about Belgium and daylight!
Food is the tricky one from a financial point of view - it's just not worth it ATM to grow your own staples (soft fruit is a different matter) - to cheap in the supermarket, but in a real crisis time they could double or treble in value. $3 a kilo of spuds doesn't sound too unrealistic!
I'm lucky I enjoy growing my own, so it's not really a chore, but it does tie you every day to your locality, unless you can sort out an auto irrigation system - which is much easier gridded.
I'd love a way of avoiding power inverters - I think my Mac Book has a USB C port, but charging drill batteries - that still requires a regular plug!
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