If you are going to manufacture the item, then you should seek the advice of a local zoning attorney to make sure the building is zoned properly. You should consult with a CPA to see which business form is best from a tax prospective. You should schedule a consultation with an experienced attorney to assist you after you speak with your CPA to review the lease of the premises you wish to occupy before you sign it, review your business structure whether incorporated, sole proprietorship or LLC.
If this answer is helpful, then please mark the helpful button. If this is the best answer, then please indicate it. Thanks. For further information you should see an attorney and discuss the matter completely. If you are in the New York City area, then you can reach me during normal business hours at 718 329 9500 or www.mynewyorkcitylawyer.com.