The first thing sheep will do is chew through the bushes and either escape or get tangled up. Maybe see if someone locally would temporary electric fence and stock it to see how you like the sheep and if they do the job you want before investing in permanent stock fencing?
It's worth paying to have the land cultivated and starting with a clean slate in my view, it will level any rough areas and make mowing 10x easier. Unfortunately it will need spraying in the first year or two for weeds like docks after reseeding, it's the only practical way to eradicate them
Ok, thanks - probably makes sense. In relation to spraying, is this a once a year thing or ongoing throughout the year?