Diesel in storage since October

[Dieselboy]

Been stationary in WA state since October. Diesel tank is about 3/4 full. Have a big trip down to San Diego in a couple weeks. What action should I take (if any) for the diesel and motor prior to the trip? This is a 2008 CM871 with EGR and DPF. I have new fuel filter and water separator ready to go. I realize I probably should have added a diesel stabilizer back in October but didn't realize that I'd have been sitting this long.

Thanks all!