Isn't there also an oil industry in Montana? I recall doing some oil exploration out there in around 2009/10
That's the biggest thing I would want to ask about if I had the option to sell a house and buy a truck outright. Everything is pretty much tax deductible, it's hard to save receipts because they get lost or fade out. I found the cam scanner app pretty useful just scan and email to a business email that way you don't have to worry about losing the information due to phone or computer problems.