Thoughts on this truck

[The Brethren]

A little about me and my situation. I’m an Army vet I’m married and have a step daughter. Currently I work for a small local trucking company. I drive a 2017 international lt day cab. I bring home around 450 a week. I’m home every night and off weekends. I have found a 2009 pro star eagle with the cummins isx435 for 15k. As an owner op with this company I’ll bring home 2500 to 3500 a week home every night and off weekends. I need to do something so I think I’m going to buy the truck. It has 598k miles. I drive around 400 to 500 miles a day. I haul cardboard boxes and coke loads as well as roll stock. Do you think this truck would serve me. If my credit union will cover it my payment should be rather low.