I am beyond excited to apply what I have learned to the task of freeing myself forever from the bonds of debt, and unwanted employment.

Any other options I could go for if I don't want to get into legal roads right away?

I want to ask those experienced in California about the best purchase and assignment contracts to use so that we don't run into any legal issues.Any feedback is greatly appreciated.Thanks

Is it better to pay down my debt quickly or invest quickly and try to pay my debt with income from investment?

This means you must acquire the replacement property under the same legal entity that was the seller of the relinquished property.  

.- One commercial bank I've spoken with will bundle all three properties into one loan, however will no approve me due to debt to income ratio; I have a mortgage in my name for my father in laws house (he pays mortgage and resides there) so they see the debt but no rental income.- Hard money will do the loan but with rates at above 8% with sizeable origination fees and significant pre-payment penalties.I was hoping some of you seasoned folks could help me figure out some creative financing solutions for this little conundrum. :)

It seems like you're figuring your debt service into your direct operating expenses.

See the following for a list of lenders. https://www.biggerpockets.com/blogs/3441/51027-nonrecourse-loan-debt-for-self-directed-solo-401k-investment

I have 750+ credit score and no debts.

I seems like it will be difficult logistically, but is it legal?