Only bumping this bc we're considering releasing a "Pilsner" fermented w/ Cali ale.
You're making a blonde ale, and at 70F with S-05, it will be a somewhat estery blonde ale.
I prefer fermenting a little cooler (68F), but Cali ale still comes out really clean even at 70F in my experience. If you look at White Labs' forced fermentation data, Cali ale is almost identical to WLP 800 in almost every category:
Total Diacetyl: 78.12
Total 2,3-Pentanedione: 8.61
Ethyl Acetate: 17.46
Isoamyl Alcohol: 90.185
Total Diacetyl: 70.06
Total 2,3-Pentanedione: 11.44
Ethyl Acetate: 18.82
Isoamyl Alcohol: 116.93
Not saying there are no other differences contributing to authentic Pils flavor, but Cali ale is indeed capable of being very very clean. I've been brewing many lager-like beers w/ it for years and even some highly trained palates can't taste the difference.