Can I still be considered Self-Employed?
Sure. As long as you have income from that LLC that is, not by merely having it.
I was going to take a loan from my LLC 401k. I would like to do more
than a 5 yr loan (non mortgage) payback, is that possible? I asked
that because everywhere I read it says "Generally, 401k loans are
5yrs".
The IRS says that the loan must be repaid within 5 years. This means that it may be less, but cannot be more.
The loan must be repaid within 5 years, unless the loan is used to buy
the participant’s main home. The loan repayments must be made in
substantially level payments, at least quarterly, over the life of the
loan.
You can only do a longer loan if you're buying a home, which you specifically mentioned that you're not, so here's your answer.
Actually, at a previous job I had took out a loan to purchase a house,
but then I left that job and had to get a bank loan to pay it back.
Can I get the loan reissued as if it was a mortgage loan again. I know
the answer is no, but just in case.
Well, just in case - no:-) Refinancing is not purchasing.
You should get a professional consultation, as I'm not a professional in this area. You need to talk to a CPA/EA about the IRS rules and regulations (the devil is in the details, what they write on their site is suitable for most, but there are always exceptions), and you need to talk to a retirement plan manager about setting up your Solo 401k with plan rules and definitions that will meet your needs. It may be that the standard template that the big firms provide for solo 401k's they have may not be good enough for you.