I've been toying with the idea of doing a Kickstarter for my game to help fund some good artists to replace the placeholder graphics I currently have. Just a small goal of $2k or so. Regardless of whether the campaign is successful this time, would it be considered a faux pas to do another, larger kickstarter once the game is looking better?

Would the rewards need to be the same, or could I offer better rewards at lower donation levels for the first one as an "early adopter" bonus?