[Black Obsidian]

Alright, so as my post count indicates, I'm a complete noob when it comes to toying with my phone. Naturally, I'm going to take the plunge and upgrade it to WM6.5 as my intro to something other than stock settings. The process is a little daunting, so I want to make sure I've got it down pat before I start.

I have a Bell HTC 6800, with both a ROM and radio that appear to be greatly out of date (2.13.666.0 and 1.37.00, respectively). It's completely stock, in exactly the condition it came out of the box.

Step 0: Back up my contacts via ActiveSync
Step 1: Unlock the phone (via GAMedic's thread that the OP linked on p1)
Step 2: Install GPS-enabled radio, via instructions on above thread. His SD card method seems safest. This will stop the phone from booting fully, because the radio isn't compatible with my stock ROM.
Step 3: Flash jmartin72's WM6.5 ROM. Build 28014 Bare Bones. Flash it via instructions in above thread, either by SD method (if I can find a under 4GB SD card) or via RUU (if I can't). Assume I can jump right to flashing, as the linked ROM has already been built (?)
Step 4: Somehow my carrier CAB needs to be installed. How or when, I'm not quite clear on.
Step 5: Perform a hard reset
Step 6: Panic if my phone can't authenticate with Bell, then follow the Verizon users instruction for a new Akey.

Presumably I might want to write down any critical in-phone information first, like my ESN. Am I missing any steps or necessary data, aside from what to do with the carrier CAB?