This is a grain bill I've used before that I thought worked pretty well. 10 gal recipe.
15 lbs Pilsen
2 lbs Munich
1 lbs carapils
mash at 150F
Now normally I've actually hit this pretty hard with with hallertau throughout the boil but I don't think this is typical.
I was going to shoot for about 25 IBUs with only a very small hop addition at flame out.
I was thinking of using Mt. Hood for the bittering addition and maybe even a 1oz addition at 0 mins. Crazy? My other option is US hallertau but it almost seems too intense for a Helles.