Packing my bags for Model Schools Conference

Which gadgets to take, and which ones to leave home?  Currently, I have a heavy computer bag and a smaller one.  In preparing for this trip, I have decided to try to pack my cloths in a carry-on bag and take my smaller computer bag with me.  So, I have to decide what to carry.

Items on my want to carry list:

1. Laptop & power cable

   From view album

   
   
2. iPod video & cable
   
   


3. Podcasting Recording Device
   


• ZOOM H4
• Rechargeable AA batteries w/charger
  

• AC adapter for the ZOOM
  
  


4. Still Camera
• Sony Cyber-shot
  



• Sony charger w/extra battery
  



• Misc: Flash drives, pens,  (small stuff)
  
5. Video Camera
• Panasonic PV-GS160
  
• Charger
  
  
6. Computer bag (smaller one)
   

Now if all this will fit into the small bag.  If not, I guess I will check my luggage and hold my breathe that is will make to the airport.