These are features like online renter payments, tenant portal (for payments and work orders), help keeping track of work orders, tax reporting features, and accounting functionality.

The struggle comes when you plan to sell, pay close attention to how the bank would treat the loan in the event you would sell.Even though its a bit more work, banks are typically open to these loans as it provides them with additional collateral in the event of default.  

Once you hit a certain number of loans (check with your state dept of banking and finance or dept of business regulation), they might require you to have a license.

It took me 13 months to open a bank account in Belize.  

I actually had this account from years ago, before my Realtor days and before my mortgage lending days.

You can fund it with funds in former employer plans and/or IRA accounts.  

I wonder why he cancelled his account?

My custodian does not have a money market or similar sweep account to keep idle cash earning.

Are there going to be banks involved, creative seller financing or all cash? 

Typically seasoning means that the funds have been in a bank account for a set amount of time (usually 60 days), so ANY lender should love that....I thought maybe you meant un-seasoned funds?