I brewed a Russian Imperial Stout with a recipe similar to the one you brewed, and I entered it into a competition. FG was 1.020, and most of the comments were that it was too thin and didn't have the right mouthfeel. I was told it was out of style and would be better listed as an Imperial Porter. Based on what I remember of your recipe, it will do even worse. Perhaps enter it as a porter.
Or enter both categories.
All medal categories have been filled for some time. Nearly 1,300 brewers have entered. So at a minimum, that's 3,900 bottles of beer. Maybe as many as 5,000+.
We are entering 30 bottles.
Edit: Not sure I’ve had a 10% ABV porter. Ok…maybe a Baltic Porter. But that’s lager.
Traditionally an English style, but it is currently much more popular and widely available in America where it is a craft beer favorite, not a curiosity. Variations exist, with English and American interpretations (predictably, the American versions have more bitterness, roasted character, and finishing hops, while the English varieties reflect a more complex specialty malt character and a more forward ester profile). Not all Imperial Stouts have a clearly 'English' or 'American' character; anything in between the two variants are allowable as well, which is why it is counter-productive to designate a sub-type when entering a competition. The wide range of allowable characteristics allow for maximum brewer creativity. Judges must be aware of the broad range of the style, and not try to judge all examples as clones of a specific commercial beer.