Hi Alfie and welcome from central Scotland!
One thing I would echo, is getting a fencing contractor in for your fencing. I know it can be expensive if you have a lot of fencing to do, but it is worth it's weight in gold, and not only that but good fencing will last for years and years.
Friends of our took on a 70 acre hill farm in 1989, and not was the house a mess, the fencing was non existent. They bit the bullet and had the whole lot refenced at a huge cost. But- that same fencing is still is great condition today, and thats over 20 years on- so good quality does last.
Good luck with all your plans!
Beth