There is no LLC for federal tax, it is a limited liability company recognized by states. A business files a schedule C/F for a sole proprietor, a partnership if more than one owner/member, or a corporate tax return if a corporation. For income tax purposes, a LLC is a disregarded entity and taxed the same as a schedule C/F for income tax and social security tax.
One exception to this is to elect to be taxed as a s-corporation even though you aren't a corporation, but then you need to be an employee of the Corp and pay payroll taxes and the cost associated with all of that.
My advice would be to get good insurance coverage and keep it a cash side business/hobby.
Being a LLC will not offer the protection many people think when you are actively involved and own the property. If something happens, they will sue the LLC, you personally because you "neglected" to do something and you as property owner.
I own a farm and am a CPA.