You haven't said how many acres you have. Or how many cows you intend to milk. Or how much help you have.
In your position I would....
Forget about another tractor.
Look for decent older stuff to get the hay in if I couldn't talk a neighbor into doing it on halves.
Find a cheap small spreader.
A 170 is plenty of tractor to get a lot of stuff done. A 7' or 9' haybine, rake and something like a JD24T won't set you back too far. Heck you can still make hay with a sickle mower and crimper and an old high wheel rake if you need to.
Start raising heifer calves. You can build your own hutches for a decent price. Get a load of gravel hauled in to put em on, pick up calves at the local sales barn if nothing else. Get em early spring so they can hit the pasture hard all summer. Depending on how many you have, buying hay the first winter may be something to look at. Sell em as bigger heifers next year if the price is right and have a little jack to work with.....
Get some fence made, get that beam jacked up and replaced, get some quotes on a roof.
Any way you go, it's not gonna be a free ride. Spend the money to get your place fixed up, then you're not at the mercy of a landlord.
I see a lot of negativity in your posts. Have you actually talked to any of your neighbors about your plans? Asked around to see if anyone was interested in making your hay? You said the place was seeded down, how does the hay get made now?
I have a buddy in about the same spot. His neighbors are quite helpful if he needs a hand once in a while. Which is good because his milk check is pretty much spoken for. A loan for 20 cows plus the money to keep the place running adds up
