My wife also always thinks that everything will do itself and somehow work out. But as soon as we start doing something in the garden, after 5 minutes it's "back pain." In 4 weeks, we haven't even roughly raked through 300 sqm of flat ground (distributed with a mini excavator) so that we can sow grass. But she wants so many great and playful things and this and that. But even 350 sqm of garden is already 1-2 hours of work every day in the height of summer (watering). 2700 sqm (300 sqm for the house, driveway, garage, etc.) is another matter. You definitely need a ride-on mower or a very good robotic mower (expensive for such an area). I come from the countryside; we had such a property. My parents both wanted the gardening work; both spent every evening after work and the whole weekend doing something in the garden. If you're not already a full garden enthusiast now, such a garden will become a fiasco. And if I already hear that the husband sees it more realistically, he'll end up stuck with the work, and a divorce will happen someday because he can't handle it anymore. 3000 sqm is of course doable if you leave most of it to take care of itself. But that only works if you don't have neighbors nearby who are bothered by it. Otherwise, the public order office will gladly come by :) (at the old apartment, the neighbor got visits from them every year and was ordered to have a landscape gardener fix everything properly).