I would power wash them, steel wire brush them and sand them.

Unless you're near Brush Creek (does 64131 go that far north), Indian Creek, or The Blue River, or by some chance the property is relatively low (I mean noticeably, like you're standing at it and every street away from it goes uphill), I wouldn't worry about it.

I'll have the paint/roller/brush ready. 

You should seriously take a trip out here and talk to the experts and brush up on your Detroit.

On some very old properties or in certain brush zones there might not be an option but if there is...

Maybe could use a couple brush strokes here and there.

catalogId=10053&langId=-1&keyword=countertop+paint&storeId=10051#.UEqmZ7JlT-kThe customer reviews at HD are really bad, however, because of obvious brush marks and fumes.

The aforementioned Rustoleum paint does not show brush marks like most latex paints, and holds up much better.

I need to scrape and wire brush all of the walls, and repaint / drylock them.

Having said that, I disagree with Xing Zhu...you cannot brush things like this under the table or you will not get the service you pay for and the respect you should get.