Getting it running with a new battery in Spring. I'm curious what to look at on the car when we do get it running with the new battery. I know the tires are dry rotted, the fluids are all dirty and need to replaced. What else should I look at? Also, it's going to be moved in Spring so that's kinda why I'm curious. Answers are appreciated.

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Only diesels in this driveway.
2005 E320 CDI 243k Black/Black
2008 Chevy 3500HD Duramax 340k
2004 Chevy 2500HD Duramax 220k