I'm no machinery expert - I hate the stuff but here is a suggestion - buy used tractors out of Europe they are a lot cheaper.
Example - JD 7420 with 3000 hrs at a dealer close to me asking $81,000 Cdn ($65,000 US).
A dealer I know in England has a 3000 hr JD 6420S for $50,000 CDN ($40,500 US.)...