For a low chill peach, I highly recommend Peachy Keen Peach. I got this tree the same way as any beginner - walked into a store, asked for a peach, got this and planted it 
No idea about variety, chill hours or rootstock. It has been quite productive and tasty - Peachy Keen Peach - #2 by californicus. I can send the scions to Jon, if you are interested and he is helping you with grafting.
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