I also have an inseam of about 30" and I'm maybe a little taller than OP. Maybe my femurs are a bit longer than OP's. I don't use steep seat angles, but I have been experimenting with long top tubes and shorter stems. It makes sense to have less setback, but is it really impossible to get it with a zero setback seatpost? I fit fine on stock bikes, although I like something else usually.