Homebrewing - Beer, Mead, Wine, Cider

We feel like doing a brewday on Sunday, but as we don't have time to visit our local homebrew-shop, we want to use what we have in stock. The plan is to make 20 liters of stout.

What we've planned for fermentables:

4 kg pilsner malt @ 3.7 EBC (=48.3%)
2 kg Munich malt @ 13 EBC (=24.1%)
800 g Carared @ 48 EBC (=9,7%)
500 g Chocolate B @ 900 EBC (=6%)
500 g Amber @ 70 EBC (=6%)

With a mash profile of

45 minutes @ 62C / 143F
30 minutes @ 72C / 161F
5 minutes @ 80C / 176F

During the boil of 60 - 90 minutes

115 g Saaz for the entire time
500 g sugar for the last 30 minutes

with a Lallemand Windsor yeast, fermenting at 20C / 68F.

According to Brewfather, this should end in a beer with around 8% ABV, around 70EBC and 49 IBU.

My 2 questions:

Do you guys think this results in a beer you'd drink?
Any tips for modifications to the recipe?