The problem with mulching is that you have to do it regularly. With 700 sqm of area... well... that would be too much for me. I have about 250 sqm to mow and spend about 45 minutes with the 43 cm petrol mower including the drive. With pre-cutting, tidying away children’s toys, etc. The area is tricky because of the trampoline, sandbox, swing.... If my petrol mower ever breaks down, a robot mower is just what I want... For 700 sqm, either two small robots (Workx, Gardena or Flymo from the UK = Gardena but cheaper) and divide the areas. Or one large one, and then you're certainly looking at Husqvarna and the other specialist retail brands (not DIY stores). Also, the planning for such a large property should be examined in detail. Boundaries / sufficient lawn mowing edges, slopes.... At a rural furniture store near us, there is a Husqvarna robot on an estimated 1000 sqm plot. The lawn looks great. Apart from cutting the grass, the lawn certainly gets no other care. Why don’t you go to a Husqvarna dealer and get advice there with a building plan of your own and/or photos. Usually, the authorized Husqvarna dealers also carry lawn mower brands like Honda / Siga /....