I can't really say that my game is finished, so I feel like an interest check on the group requests would be wierd and give an initial idea that the game is finished when it's "almost there?" Could there be a play-testing request thread somewhere? Possibly even in GM's Corner, despite the fact that only 2 people seem to regularly go there? :p
Or better yet, is there an acceptible way of asking for just playtesting with a partner (or two) or would an interest check be okay in this situation?