As my wife and I were reviewing it, we saw a few things in the application and on the credit report that looked funny.

Remember the lowest price is not always the best when it comes to insurance!

The bank will want you to be working for a certain amount of time and that have certain credit score plus have your financial ratios match what they want. 

Lowest capital strategy I would say is the house hack method.

We have some credit card debt we are hyper focused on paying down , and 34K in my student loans (not touching currently due to SAVE plan with the zero percent interest).

I don't accept credit card payments for this very reason.

If your rate is low on the 5 unit, I might consider the possibility of a line of credit for my equity instead of an entire new mortgage.  

Also remember just because a loan may qualify as being assumable the lender will go through a thorough underwriting process to confirm you meet eligibility for the loan.I have seen a guru teaching people with poor credit to go after these types of loans and it’s unfortunate as many would most likely not qualify.

When a husband and wife jointly own a residence, and the husband takes out a Home Equity Line of Credit (HELOC) in his name only, the spouse's involvement and liability can vary based on several factors, including state laws and the lender's requirements.1.

Check with a few local credit unions as they usually have the best HELOC offerings.