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Your products may be different, but I don't know that I'd spend a lot of effort trying to carve that specific word out.
Once you build up a little history, you can look through the keywords and see if there are some that you get enough traffic on to segment out.
You'll also want to pay even closer attention to potential negative keywords and perhaps some broad matches which might lead to entirely new keyword approaches.
I would start generic and only get specific once you've got data.