I’ve idled mine for 10 hours a day several days in a row many times. 65k miles and I’ve only had to replace the oad pulley on the alternator. I don’t feel like the extended idling has shortened the life of the engine.
I’ve got an AFE ProGuard 7 air filter for sale. It’s the one made for extremely dusty environments and is reusable. It’s used and does need cleaned but works like a charm. I thought it’d be nice to have a reusable filter but then remembered that I’m lazy and is easier for me to replace them...