and welcome from Tayside.
Wow 2.8acres of potential garden - I'm in heaven
The extra 1.8 acres has so much potential, a lot of which waterbuffalofarmer has mentioned a lot of good ideas.
You could become self sufficient in fruit and veg through a large plot along with polytunnel.
You could plant an orchard and under planted with wild flowers in a meadow type situation.
A wildlife garden?
Stock wise - depends what you want and if you have the desire to have any at all.
But Mad Goatwoman of Madeley raises a good point of renting it out. Especially until you decide what you want to do with it if anything. it may be that you just leave it as a paddock and rent it out to folk.