I need to just make a website for all these damn turbo/intercooler/bov/power making questions...

There is no such thing as an "air cooled" turbo. There is such thing as a oil cooled and an oil AND water cooled. The only difference between an oil and an oil/water cooler turbo is the amount and type of cooling a turbo recieves.

For longevity it is best to have an oil and water because it provides 2 sources of cooling and you dont have to let the car cool as long after a hard run.

If you go turbo buy a turbo timer, they let the car cool down some and allow the oil inside the turbo housing to cool the housing to a level where it wont basically bake the oil to the cover.

Ball bearing Vs Non-ball bearing, its simple... A ball bearing turbo is not common (but not impossible to find) in a factory built car, most are standard bearings. A ball bearing turbo spools faster then a non and also has a tendency to last a bit longer, depending on use.

Oil changes are important with a turbo because the oil is now going thru a hell of a lot higher heat source then it origionally did. Also run synthetic.

As far as the size of turbo you should run you may want to do the easiest thing and consult a shop that can give you adivce and reference dyno sheets and graphs they have done before. Generally speaking the smaller the turbo the lower RPM it boost and and the more low end power it makes,However in doing so it will lack the upper RPM power. In a larger the turbo the opposite is true.

I am not a honda master and I do not claim to be but turbos and motors are pretty universal in a basic sense atleast.