Welcome, Sander. Surely do admire your ambition in starting a farm with not even enough money to buy seeds. I guess you've spent all your money buying land? In this country there are grants for farmers to help get them started. I'd be surprised if a country as progressive as Sweden doesn't have a similar program.
You also must not have a lot of experience with growing vegetables? - i.e. open pollinated is not necessarily the same as heirloom, although most heirlooms are open pollinated. I think an heirloom variety must have been in continuous cultivation and 'passed on' for at least 50 years.
I'd advise you contact your agricultural board to find out if it is even allowed for seeds to be sent to you from other countries without government inspection. Insect eggs, fungi and other plant diseases can be transmitted this way so it's not always allowed.
I can't send you any seed myself, as I don't plant any heirlooms or OP types. Growing in Florida, I need the disease resistant traits that the newer hybrids provide.