Machinery sizing

Hello everyone, 

 

My family has a 100 acre farm, we have been renting out the land as hay ground for a while now, I am thinking of buying some hay equipment and baling myself. we figure there are 60 acres of good hay ground. no rocks but somewhat of a hill. im wondering suggestions of what to buy used and how wide. I have run a pretty big discbine with center pivot and really liked it. as far as tractors we have 2 about 50 hp and 3 about 40 hp so one more 125 hp or so for mower and well be good on power plants

 

thanks!

Machinery sizing