For the record, I meant 0.10 and 0.08.
And if I were in your situation (having a previous DUI already on my record) I'd be much more careful. Not because I think I'm unsafe by any means, simply because the consequences would be too great in the event of a repeat offense.
Honestly, I wouldn't be willing to have four beers and then drive. Actually, I think I'd buy a breathalyzer so I could be certain I was under the limit every time I got in the car.