I am really interested in the NFO but I am not sure if I am competitive at all? That was my first attempt at the ASTB with one week of studying.
I am also not sure about the selection process if I am not selected for NFO but am selected for Intel can I decline the offer and reapply after retaking the ASTB?
Having been through the ASTB once do you feel a retake would help your scores? Do you remember which areas you struggled in and where you felt confident? Other folks can give you more intelligent gouge on your test scores, but I would (personally) study and retake it when able.
This may be bad intel, but I had several different pilots/ NFOs tell me to "request the community you want" - in other words, if you want NFO put NFO and nothing else. While I cannot verify the validity of this technique it certainly prevents you from walking down the road you just described.
Good luck to you!