how to start a flooring installation business

I'm starting C.L.R. FLOORING INSTALLATION in Emmett, ID and surrounding areas such as (Boise, meridian, eagle, nampa, caldwell, star etc...) I'm getting the Insurance taken care of now.. my question is do I need to do the L.L.C. to get my license number needed to get contracts through flooring companies or can I use the free federal tax ID number as my license number??? Thanks and any and all advice would be grateful

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