This is just my opinion, and you know what they say about opinions. A satin finished all black guitar is going to be boring. You have some very interesting grain and stains can be used very effectively to highlight grain. As I said in an earlier post, you are going to have a lot of difficulty with end grain absorbing a lot of stain and going very dark, which means the sides and the belly cut and particularly the area around the heel is just going to suck the stuff up and go really black. My humble suggestion would be to mix up some stains in various concentrations and experiment on scrap ash. You might try adding a hint of redish brown to bring out the warm tone of your neck. Remember that once you start on your body you are committed. Good luck, I think this could be a pretty cool guitar.