guildfordcycads

I recently moved to denmark with a bare 1 hectare piece of land. I want to build a food forest but wonder where I should start? I have read a lot about it and know what steps I should take but, I am on a serious budget so i thought I’d start this year with tilling the soil because it has previously been used for hay and the soil is clay. So i thought a ground cover and also some fruit trees to start with? Should i do clusters immediately or should I start with only ground cover and trees to “fix” the soil? The previous owner has used pesticides🥲