You certainly seem to be in the right area, nice simple recipe (I like it). Some treacle or molasses could be a good addition if you want to go in that direction, but it isn't necessary.
It also looks like your BJCP guidelines are a bit off: http://www.bjcp.org/2008styles/style19.php#1a
you are towards the high end for bitterness and gravity, but that's fine.
What temperature are you mashing at? 1.015 FG would be on the low/dry end of the style (especially considering the high OG), again nothing wrong with that if it is what you are aiming for.
Hope it turns out well.