You're looking at tens of thousands of dollars of costs - filing, petition, and relocation, not to mention the setup and such - so your approach of asking online without a thought of consulting an attorney can bring this into "joke question" category.
I hope you have read a recent article about the way smaller employers are being squeezed out of the pool of visas because larger employer simply appear to flood the processing centers with petition requests.
For that L visa to be applicable, your business needs to have a location in US and a location overseas, thus transferring the employee from one local to the other; if you have no other location, then it's H1 visa, and I want to wish you good luck with that.
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