Wonder how much they'll have after mortgage and fees are taken off? They'll need a chunk to rent and then buy in Portugal. Plus potential school fees if boys go to an international school.
I can't see Hannah wanting anything less than a nice place near the coast, with the type of upmarket cafes she likes to go to frequently nearby. They really aren't the type (or have the imagination/skills/work ethic) to buy a more remote place that needs work (such as Indie Projects have done, spent years self converting an old stone barn into a tiny home with land). So they won't be looking at the lower end of the market.
That means they'll still need to earn, which I guess is where steff's constant need for passive income comes in. Hannah won't get so much ad work being out of the UK (Muller,Sky etc won't be viable),even her green meal delivery things will be out, which pressurises even more the need to earn. They would really have to start being much more consistent with YouTube to actually get decent ad sense money, but they are essentially lazy.