APRS is packet radio, one major use of it anyway. General use APRS activity sits at 144.390MHz, so position reporting, messaging, any other APRS stuff will be there most of the time.
Winlink is really the only other major thing packet-wise you need to configure on VHF. Your emcomm frequencies might be different, that depends on the coordination and scenario.
On HF you'll need to get Paclink and PSK31 going. Also there's JT65 that's used on VHF and HF, although not much for emcomm.
'91 Pickup - Imelda
'08 Tacoma TRD - Donna