I am channeling a well respected colleague, when I say why do you Americans always want to turn it to 11. Guilty, I saw the recipe guidelines and went right to 95/5 as well. I found though many dozen batches it will be too sweet. My best old helles was 98/2. Target 14ibus tinseth, as it's about 3-5ibu too hot. You can single hop it, but I prefer 50/30. With ~2-3ibu coming then. You want it to finish no higher than 1.010, so mash accordingly.