Dedicate one checking account and credit card exclusively to real estate.

Pay your vehicle loan, credit cards, etc because in 12 months all of the accounts you pay out of a business checking account will be omitted from your DTI in the future. 

It would be nice if you gave them more than that, because it takes a lot of effort to move a business (online marketing, business cards, etc.).

To answer your questions here though:Alternative options - I was going to sell all my stocks and etfs, take out a HELOC, and some credit cards to try to shoestring together enough to the deal without a hard money loan. 

The tenant pays a monthly premium and keeps an active bank account and credit card on file.

Credit Karma has a fantastic "score simulator" tool that you can use to project credit score changes (paying off balances, opening a new card, using an old card that has not been used in some time, just paying your bills on time for 6 or 12 months).

You can purchase a cheap camera with a built in cellular connection: Cheap 4G Camera All this needs is a SIM card.

Personal loans through the credit card companies can be approved and fund very quickly and my best rate is 7.9% so shop around as some are much higher.

I use dealmachine for cold calling and for sending post cards and that has worked pretty well.Good luck!

Any additional mail costs $.50-$.76 depending on the size... so to prevent you from having hundreds of $.50 charges on your credit card, the default "reload" is $50 (you can set this to whatever you like in the app).Hope this helps....