Alternatively you can become an agent's unlicensed assistant and get your own username and password along with limited access (some agents are okay with this, especially if you throw some deals their way or pay a monthly fee).

Any best practices in situations to limit my downside risk.

However, we believe it would be wise to use the LLC and a joint bank account under the LLC’s name to track cash flow.From a perspective of reporting taxes, would the LLC limit us?

Chris find out if located in the city or the county limits.

Definitely echo the sentiments that $0 money investing is much more myth and marketing snake oil than being plausible.Closest thing I know to quick easy funding is a 0 fee, 0% credit card balance transfer but not everyone can command 30K plus credit limits and I wouldnt recommend that path unless you are equipped to handle that debt once the promotional APR expires

Or it could double like this random house in my city did since it's 2006 sale price:https://www.redfin.com/WA/Kirkland/134-8th-Ave-980...So you have to decide if taking on the debt is worth the potential reward, including your specific scenario limitations. 

You should use limited warranty deeds to transfer the rentals from your personal name into your LLC, put all rents into the business account and buy a good umbrella policy for liability protection.

Are there limits (like, no jumbo)?

Home Possible not only has minimum income requirements to qualify for the loan (with DTI), they also have income CAPS which LIMIT the amount of income you CAN make in order to qualify for the program. 

One way to be able to deduct passive loss from from active (w2) income when you make more than 150k limit is to be considered a real estate professional (you can look up requirements on this).