I just start out with a front as delivered from Track, one always has to file about 1/3rd of it away to get the elevation for your rifles perfect load. I spend a lot more time shooting load combinations to find what my rifle likes than filing the front sight. I file the sight until I am hitting a couple inches low then work up a load. When I am satisfied with a load I take those last few strokes with my file to bring the group up where it needs to be.
Don't worry about wearing out a frizzen, I had a rifle (I was the third owner)that did have a worn out frizzen, the previous owner told me he had put 50K shots through the gun over the years. I shot the gun for 5 or 6 years before the frizzen finally snapped in two.