Help with buying a property

Hi everyone, I need some help in buying a property.

First I will let you know my situation; I want to buy a property for permaculture with my partner, and we look for something around min 1 acre, but a property with a few hectares would be even greater (because then we could plan a long term small eco-community). Our age is 30.

In our country (Portugal), where we want to return (we are currently in Iceland gathering some savings) it is important to have water (a well or spring, and preferably a wet and fertile soil - forest with olives and oaks rather than the drier pine and eucalyptus)

Some properties do not have any house or ruin, and these cost around 5000 to 20000 USD, but between 20000 to 60000 USD we can get something with a ruin or even sometimes with a nicer ready to live old house. 60000 USD is our maximum, we only have a part of it in savings, and we might get there in a couple years, with our jobs. At same time, we have also a property from a relative for sale, in a wet forested location, but the situation is not fully ready yet and we are becoming tired of waiting for it. All these locations are countryside, but always a few kms from nearby villages (but away from large cities) and always with several neighbours (properties are never very large).

Besides the option of moving to a land with a ruin or house, I also consider the option of moving only to a good land, without any house, and start living in a yurt (must buy one also), but then the trouble is building all the infrastructures (I do not wish to go off-grid, energywise). Alternatively, we can build long-term some kind of ecoconstruction, like an earthship (to which laws of rather open).

We always look for a property with water, fertile soil, fruit trees, rather flat and forested land. Fertility is not so important, because actually most of ortuguese soils are rather poor, so we always have to work with Permaculture in them. Water is the real must. Sometimes land is flat, sometimes land is slope. Money if of course a limiting factor for us (unless we wait several years), as is the fact that we are living away from our country (so investigating stuff with the internet is harder because we can only get to see the property if we travel there by plane).

We are looking mostly 1 hour away from the Atlantic coast (zone 9, hot dry summers, mild wet winters), if we go 2 hours away from the coast, terrain is more mountain, properties are cheaper but winter have more snow and frost (zone . If we think more south of the country, properties are way larger / cheaper but climate much drier and poorer soils. So we think staying more or less in the center of the country.

Last point: Portugal is under a serious economic depression, so even if we have plenty of income ideas (like hosting tourism, workshops, etc), most likely we will have to rely in making a living out of the food we grow.

Would you give some additional advice? I especially welcome opinions of someone that has already been through this.