A: In Idaho, your firearm rights depend on which felony you were convicted of. And just because you may have the right to possess in Idaho, doesn’t mean you have the same right under federal law. You should consult with a criminal defense attorney who has knowledge about firearm rights.
A: It's possible to get it reduced but in no way guaranteed. The possibility depends on several factors, such as prior criminal history (not just prior DUI history), the facts of the case, what your other blow was (you should have two separate blows), cooperation with law enforcement, etc. If the first blow was below .20 and your second blow was sightly over, there's a stronger argument that your BAC was under .20 when you were in actual physical control of the car and it therefore shouldn't be an excessive DUI. I would consult with an experienced criminal defense attorney in your county.