Erkka, I love your blog, and I would definitely support your game too! But it is going to be hard work, so make sure you have all the production power either in you or from someone helping you, as I think you should apply to all the possible funding. Starting with Avek's Digidemo (https://www.kopiosto.fi/AVEK/tukipaatokset/digidemo/) - as you can see from the list there, similar projects have already gotten funding for creating a demo, such as "Kylänrakennuspeli suomalaisesta kivikaudesta" (A village building game abouth the Finnish stone age). 5k€ is kind of a nice amount of money and with your low cost lifestyle should buy you a good amount of working hours!

Don't underestimate the producer mindset to keep things rolling! I am worried that you will get lost in the coding and design details and you will forget about the big picture :)