What are the issued equipment at my first duty duty station that I can keep?

On your clothing record, it will indicate what you turn in at PCS, what you carry forward, and what you can ETS with. What you ETS with is ultimately what you keep, generally it's going to be your ECWCS silks and waffles, some gloves and other minor things that will likely have been heavily used anyways.

Laundry bag.

Print out your CIF HR off AKO. There are columns that indicate whether you PCS with it or you can ETS with it. Double check with CIF. There have been “discrepancies” before.