I have a crankset with 38t chain ring and my plan is to use a 11-36 cassette. according to the calculator it should give me 93Gi for high and for low 28Gi.

I know that's pretty high in terms of gearing, I'll probably replace it with a 34t

I don't mind coasting going down hill or walking up if I have too. I guess it's a good excuse to get off the saddle.