I bought a BX 1800 2 years ago and have done 500 hours of work with it since. Amazing machine! Any way there are a few things it doesn't do that I am now thinking I want to get done. I want to trench a 350 foot 5 foot deep trench and dig out several 12 inch elm stumps. What is the minimum size tractor and backhoe that I need to do this? Thanks.