Well i would say brace it higher. My minimum starting brace when i put it on the tree is with the string laying tight against the belly/grip, so tight you almost can't get your fingers underneath. If you've floor tillered it properly as mentioned, you may even get it to a two or 3" brace at this point. The long string lies. It makes the inner limbs look weaker than they are and the outer limbs look stiffer than they are.
Also, with a pyramid bow, you're looking for a circular tiller. Both limbs will fit on a circle (don't try to fit them on the same circle because the stiff handle section keeps that from working).
Like this:
the circles are a touch elongated due to the slight cant of the bow, but you get the picture.