Icon from out of box to Windows 10 redstone?

Hey guys,

I just took advantage of the Lumia Icon for $99 sale at groupon (Grab a Lumia Icon for the lowest price we've ever seen | Windows Central) and I'm super excited to upgrade to this phone vs my existing Lumia 920. It arrives in 6 days, so I'm curious the best steps to go from out of box to latest insider release (redstone) along with all the right firmware updates (cyan, black, etc).

I have t-mobile, and I don't want to mess with that until I'm already at redstone, so... is this what I should do?

1. Open box, don't insert SIM, power on phone and connect to wifi
2. Connect to Microsoft account. Don't restore backup
3. Install as many win 8.1 updates as available
4. Setup Hey Cortana (I saw in this forum you have to set it up prior to win10)
5. Download & run the windows 10 upgrade advisor, which should allow the phone to update to 10586.420 (production)
6. Download Windows insider and activate release preview
7. Install update to get to redstone
8. Put in t-mobile sim card and configure the APN

Anything I'm missing? Anything unnecessary (could this be simpler)?

Thanks everyone!

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