Generally, I like to go a little rogue on my beer recipes and I love me some American hops.

A while back I brewed a nice Cascadian Dark Ale, to my tastebuds it was a little like lime marmalade on burned toast; fruity roasty deliciousness!
The plan is to brew a milder version of that with a bit more malt complexity.
My provisional recipe;
Pale Malt 3940g
Crystal Malt 100g
Munich Malt 100g
Chocolate Malt 75g
Black Malt 75g
Columbus 15%aa 14g 60mins
Columbus 15%aa 14g 0mins
Something like 23IBUs
I'm shooting for 4% ABV though I wouldn't be upset if it were a little lower.
Any opinions/guidance would be welcome.
Maybe a little more crystal or munich to balance with the dark malts?
*edited for hop amounts*
