@RyanCScott , having gone through most of this thread, I would just like to point out that
(a) a single member LLC is by default treated as a dis-regarded entity i.e. it has no existence separate from the owner -- therefore you use your own SSN and schedule-C for filing a return. However a single member LLC can choose to be treated as a C-Corp or S-corp -- but you have take the extra step to request that treatment.
(b) EIN for an LLC is a different matter -- it has to do with whether you have employees --- it is Employer Identification Number --- it is used for depositing the employee withholdings etc., even in the case of a dis-regarded entity. It is not directly connected to whether you are a disregarded entity or an entity.
(c) I totally support the thought process that when you start your business and/or at major changes , you should consider discussing / accounting methods / your options/ plans etc. with a tax professional or a tax attorney and structure your book-keeping and entity characteristics correct.
Hope this helps
pk
