Sounds good. Since clay holds water, i'd tend not to go too heavy on the peat moss or use much perlite/vermiculite. My ratio for sandy soil is 1/3 organic compost, 1/3 perlite/vermic and 1/3 peat moss.
Beer so good, it's frightening.
2014: Seven Heavens Series One: Vilon, Mystic Melomel, Skeeter Pee.