How Do I Go Wide with a Specific Product and Model?

Hello,

I'm building a keyword list for a specific brand name camera, model and number. Following Amit's advice, I'm going wide first, however I have a couple of questions:

1. How do I go wide when the product is so specific? I come up with depth words like:
buy brand-model, brand-model sale, brand-model accessories, brand-model review, etc.

2. Should I put the brand name and model on all of my keywords to avoid unwanted (untargeted) clicks? or

3. Should I just use Google's Keyword Tool and type "brand name digital camera", use the keywords on that list, then test it on a campaign and once I get some feedback then go deep?

Thanks,