Question about joining PD after my service is up.

[tx4life]

After I get to my next assignment, which is much closer to family I am planning on applying for the PD. I wanna start at least a year before I seperate to make sure it gets done. I want to avoid getting out of military and for some reason not finding a department to work for. I am willing to take leave to goto appointments or interviews and I was wondering if I happen to get accepted are they okay with saying your start date is when you outprocess with your base?