The series specs are at the site below.
Diesels are very good.
They tend to be a bit more powerful for the same model than their gas counterparts. They also tend to use less fuel, and be able to run longer between teardowns. Like I stated before, you will need some implements to go with the tractor. Sounds like you will need a back blade in the 7 foot range. You may want to look at what is called a 'box blade'.