Inspiron Mini 9 - Install Bluetooth?

Hi...

I recently bought a used Inspiron 910 (Inspiron Mini 9) that was pretty loaded, but didn't come with the Bluetooth option from the factory.  While I recognize that I could add any number of USB Bluetooth adapters, what would be the best option?

1. USB Bluetooth adapter
2. Dell OEM Bluetooth adapter J613H (~$20)
   
   1. There's a bit of prying & wiring with this option
3. Replace the existing Dell wireless mPCI-e adapter with a new combo one, likely from Intel (802.11n+Bluetooth - ~$20 / 802.11ac+Bluetooth - ~$35), connecting to the Mini's existing built-in antenna

The last option should work, unless the Mini 9's WiFi or WWAN ports aren't mPCI-e...  (I took out the Dell 5530 3g WWAN card, which gave a nice speed improvement). And I'm running Win8.1 Pro 32-bit.

I'd be looking to be able to stream from the Dell to another device (e.g. headset, speakers, etc.), so option 1 may not work for that purpose (e.g. an adapter that comes with a Bluetooth mouse).

Thoughts?