Royce has some good advice, I'll mostly echo.
There are compact newer little diesl tractors, they can do a lot of what you want but they are built light. Very nimble, but not much 'power' or lifiting ability for the hp rating.
The utility class of tractors are built with more cast iron, more beef, and you can get more work out of them per hp. You can lift round bales with loader on one, you can run a baler, etc.
While a Ford 8N works, if you are looking for a tractor, I'd look for live pto, more trsansmission speeds (5 at least, 8 or 16 forward, 2-4 reverse makes many jobs much easier to do), power steering for a loader, live hydraulics. I'd want a rear set of hydralic ports to raise & lower equipment, run stuff.
Any hp from 25 to 60 would suit your needs, depending how beefy a tractor you need. Weight of the tractor is often more of an issue than just hp. My garden mower tractor is 20 hp, of course it can't pull a wagon of any size or run a baler.... A heavy old tractor of 30+ hp can do those things, as the dricveline is built stronger and it's heavier so you don't have the tail wagging the dog.
Our advice is all over the place of course, as many things 'work'. You have to sort out which tasks are important to you, the size tractor you will be comfortable with, and all that.
I'd look for good options as some of us mention, and decide if you want the smaller nimble but less beefy compact type, or the bigger badder utility class tractor.
Most of the features I mention started appearing on tractors as options in the mid 1950's.
Good luck in your search.
--->Paul