Wow, i just typed out a long response and lost it...im kinda ticked! [:@]

Let me summarize and you can PM me if you have any questions...

Hopefuly you didnt spend all your money on the camera, cause the accessoriescan bealmost as expenisve!

Tree Arm
-HB Sniper Pro (top of the line arm, but not thecheapest)
-Hunter Cam Cradle (should be ok for your camera, but i have heard they can be a pain as well...)

Audio
- Boom mic: definately get a good set of mics for your camera. Sennheiser makes some awesome stuff. Definately check them out at B&H Photo & Video
- Wireless Mic: Samson Airline series - they are compact, great quality and run on a single AAA battery...
- Headphones: Get a nice set of on ear, or over the ear headphone for monitoring the audio while on stand.

Lighting
- Definately pic yourself up a nice camera light for shooting recoveries in the dark