For example:
http://www.kubota.com/f/products/BX1850specs.pdf
ground clearance 9 inches
http://www.kubota.com/F/products/GL40/pdf/gl40_spec.pdf
ground clearance 14 inches
but it's not listed on the TLB's.
I'd rather get a tractor with clearance than get a machine stuck.
The ag tractors with a backhoe mounted will normally have LESS clearance than an industrial designed for the hoe. You didn't see that in the specs, but it's typically what you will find.
The machines you listed are not (IMHO) large enough for your 300 acre property.
Look at the Kubota
M59 TLB, Deere 110 (or Yanmar equivalent - same factory) for mid-sized new. Or you can buy a used large industrial machine for the same money with 1500-3000 hours. Case 580 series or Deere 310 or 410 would git it done.
The only thing is most large industrial TLB's don't have the ability to remove the BH and don't have 3pt arms or PTO. The
M59 does have 3pt and pto and I think the deere 110 does too.
[URL/]http://www.kubota.com/f/products/
M59/pdf/m59_spec.pdf[/url] - this link shows the
M59 TLB to have 13.8" of ground clearance.
As you are not a tractor experienced person, I would recommend you get the largest Kubota Grand L with HST transmission and 4wd. (Or the
M59 - Yes, I am an Kubota fan). Of the current generation of tractors, Kubota has the best HST transmission in the Grand L -40 series. Deere is a close second. Others will advocate for other colors and shades of paint. That's ok, there are a lot of choices and multiple choices are a good thing in our soon to be outlawed free market economy. If you won't be going thru the woods a lot, a cab tractor with AC may be a blessing in the summer.
The best deciding factor is not ground clearance, lifting specs, hp or transmission. It's how well your butt feels in the seat. If the machine "just feels right", that's normally the one for you. I would also say that most people will buy a too small first tractor. Trust me, they shrink dramatically in the first 6 months.
Enjoy the shopping experience!
jb