For the uses you stated, there's nothing you can't do with the first gen iPad. Twice the price is steep for the relative increased speed and lightness IMO, unless it removes essentially *all* checkerboarding or Safari refreshes.
Get the first gen and use the savings for iPad 3 which will have an improved display (or any other Apple product).
Get the first gen and use the savings for iPad 3 which will have an improved display (or any other Apple product).