VW sent me my Treo 650 (christ that was a long wait)

I need help with some accessories. I drive a GMC Sierra pickup truck all over New England. I need the following

hands free
booster antenae
GPS (Tomtom seems the best from my research)
hardwired to truck electrical system
sound through trucks speakers

Dave from Seidio has been helpful in recommending the G2500. They ran out of the Tomtom software between 10am this morning and 5pm when I got home. Should I wait or go with Maptropolis?

If I get the hardwired kit should I get bluetooth GPS or hard wired?

If bluetooth how often will I be changing the recievers battery?

Can I still use a bluetooth headset while out of the vehicle?

Help me!