Did you work with any real estate professionals (agents, lenders, etc.) that you'd recommend to others?

Also find a good lender that is well versed in STR/MTR loans to make sure you qualify for financing (if you need it) and that they can execute the loan smoothly

Did you work with any real estate professionals (agents, lenders, etc.) that you'd recommend to others?

We do not have contacts with private lenders at this time.

The other way I fund deals with none of my own money is using a private lender that I have years of experience and relationship with and/or using HELOC and other business lines of credit.

I suggest that you make it a point of finding a good lender, not just someone who can do the job of helping your clients buy their home but someone who is willing to teach you.

Aim for 720+ for best rates, I suggest start building relationships with your local lenders.

My fear is the lender calling the loan due because I wouldn't have the cash available to pay it off.I don’t know of many cases where a lender would allow an assumption let alone a “subject to “ situation.  

Renting it out before that could violate the loan agreement unless the lender grants an exception (e.g., job relocation).

Do you have a list of recommended lenders?