I wouldn't reduce the gap on the stock plugs that much. You want to run as much gap as possible without misfiring. I would guess about .035 (maybe a little less).
Just Gapped my plugs at .030 man my car feels like a rocket compared to before. I had gaped it at .050 before the downpipe. After I installed the downpipe it was missing badly so I gapped down to .030 the idling is completely normal. The boost builds up real low at 2500rpm and the response is a lot quicker its great!! Planning to regap after boost mod to .026/
The stock plugs or 3330's at .030 seem to work well for me. I like the stock plugs slightly better though, same power and runs smoother at idle. Thay will also last a hell of a lot longer.