I might put 2 o 3 properties per LLC to lower the amount of LLCs and fees.Question: Why is preferred to use a warranty deed, instead of a quit claim deed?

The contributions are lower so it takes a while to build, but once you do, it's tax-free investing. 

There a handful that can do lower  than 620 at 50% LTV, however the rate will be very high My current score is around 670-680.

Contrary to most business lending, the REI industry has a lot of "non-bank" lenders that provide attractive loans that can lower your cost of capital and improve your profit/cash flow. 

ACTIVE real estate investing is an ENTREPRENEURAL activity, which means RISK - REWARD.IF - you’re happy with passive type lower risk investments, your spouse doesn’t have to “be your partner” - as long as they’re comfortable and cognizant of the risks.If you dream of an ACTIVE real estate investing career - it may work only if your spouse is SUPPORTIVE, and willing to accept the risks, which may include the possibility of being wiped out in a 2009 style depression. 

If it was paid off or if rates would drop so I could refinance to a lower rate, then it may work.

I have been digesting all things Real Estate so right now I am working to lower my DTI while saving at least 6-7% for the Owner Occupant down payment (to include closing cost, etc.).

I have lowered the price significantly this year. 

that we’ve learned in our 24 years, managing almost 700 doors across the Metro Detroit area, including almost 100 S8 leases:Class A Properties:Cashflow vs Appreciation: Typically, 3-5 years for positive cashflow, but you get highest relative rent & value appreciation.Vacancy Est: Historically 10%, 5% the more recent norm.Tenant Pool: Majority will have FICO scores of 680+ (roughly 5% probability of default), zero evictions in last 7 years.Class B Properties:Cashflow vs Appreciation: Typically, decent amount of relative rent & value appreciation.Vacancy Est: Historically 10%, 5% should be applied only if proper research done to support.Tenant Pool: Majority will have FICO scores of 620-680 (around 10% probability of default), some blemishes, but should have no evictions in last 5 yearsClass C Properties:Cashflow vs Appreciation: Typically, high cashflow and at the lower end of relative rent & value appreciation.

that is a much lower risk way of getting started than with a sub to deal