You are right on track. I prefer logging over serial data more than analog because you get the raw digital data, and you don't have to worry about any voltage offsets for the analog signal. Works great with the MPVI2, and no need to buy the pro version as you mentioned. Yes, you will use 2 USB ports on your laptop. The AEM 30-0300 is a great unit. I can get you one cheaper than Summit or Amazon (PM me).
Make sure you have a good USB to serial converter. I always buy one from Amazon that has the FTDI chip and lots of good reviews. The FTDI chip usually works with windows os "out of the box", meaning it will install the correct driver auto-magically. Here are links to the serial converter, serial cable (which I cut to adapt to the AEM gauge) the last time I built a WBO2 setup. Worked well for me. I hope these links work. Let me know if they don't. I like to do a temporary setup and I use the clamp in the tailpipe as well as a cigarette lighter adapter for powering the wideband. About that exhaust clamp, don't trust the bolt to hold it on. They will fall off. I get some mechanic's wire and wrap around the clamp and somewhere under the vehicle for additional security.
https://www.amazon.com/gp/product/B0...?ie=UTF8&psc=1
https://www.amazon.com/gp/product/B0...?ie=UTF8&psc=1
https://www.amazon.com/gp/product/B0...?ie=UTF8&psc=1
https://www.amazon.com/Innovate-Moto...7065501&sr=8-2
You cut the serial data cable (NOT THE USB CONVERTER) and wire it into your AEM gauge. There are 9 tiny cables inside the serial cable. You only need 2 of them. If the cable you bought uses the conventional standard (the one above does) the black AEM ground wire goes to the green serial cable wire. Then the blue AEM serial wire goes to the red serial cable wire.
Here is a graphic I stole from somewhere a while ago. Not mine, and credit is due to whoever made it, which I would give, I just don't know who to give it to.
serial wbo2 cable.PNG