beer brew experiment

I am new to brewing my own beer but have spent a lot of time looking over various methods and recipes. I am very adventurous by nature and decided to take from some recipes and make something my own. I decided to make a brown ale type beer with hopefully a little bit of brown sugar flavor and here is the ingredients. Please send feed back on what you think.

4#DME light
1.4lbs two row pale malt extract
6oz crystal 60 155 degrees 1 hr
6oz chocolate malt 155 degrees 1 hr
add .5lbs of brown sugar with 10 minutes left of boil
1oz williamette at 60min
1oz liberty at 1 min
nottingham yeast

I don't know how much of the brown sugar flavor will come out. Yeast will keep working until all sugars are gone, so the brown sugar will theoretically be fermented completely out of the batch. You might try a high quality dark candy syrup as they're known to impart some flavor as well as boosting gravity.

as far as I understood molasses is not 100% fermentable (which is what is in brown sugar) it should leave some residual flavor