It is your computer so you can do with as you like but I certainly would not go that route.
I have found that Aperture is much faster way to handle the vast majority of my editing needs plus it also maintain the original photos untouched in a database for me. Things that are not possible with Photoshop.
I would suggest you try the demo before you downgrade to see if it fits your needs as it does mine.
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Allan
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Message was edited by: Allan Eckert