lots of advice already but you sound like a machinery salesmans dream it depends on your budget and if you are prepared to spend thousands on an item that is used once a year or buy scrap that still costs a fortune to rebuild and maintain
it is all good and well seeing a man on a tractor and thinking i can do that yes it is simple to someone that is capable and does it day in day out only you know your skills at repairing old machines or if you have any experience at farming/smallholding
but if you are determined to get a fleet of machines the first requirement is a tractor the old grey fergie was the mainstay of farming at one time and had a complete range of machines that would fit and work properly again if you have the money get a big tractor but i could be totally usesless
i have a 35 horsepower international and it can drive a 9 foot topper(i have had a 150 horsepower tractor on it and the power boost was on all the time) all things are relevant big =more money and fuel and more to go wrong small takes a bit longer and does not cost a fortune
hedging there is only one farmer i know that has a hedger all the rest get a contractor in to cut them and if you lack the skills you will make a mess of that hedge also good hedgers cost £10000-£20000 and require a big 4 wheel drive tractor for stability
start with a small tractor a proper tractor not these Micky mouse efforts and as your need increases trade it for a larger one and your skill develops with your purchases as you need them