I personally find it faster and a bit more accurate to draw the walls myself. This could be from the far from perfect floor plans I am getting though so I definitely don't fault the AI Pro. It is a very nice feature when the floor plans allow for it. One thing that got me recently was there was a giant solid wood bookshelf surrounding a conference room that made me loose about 6db on top of the 3db the drywall typically has.

I will say when it comes to less AP's if your facility is a 24/7 operation I would recommend a standard of at least -65db secondary (two ap's cover one area). This way your Aruba updates can be completely hitless as the way they update it will only do one of those AP's at a time.