4 unit purchase with 7year arm and seller financing.

[Michael Marshall]

I am considering purchasing 4 unit properties in order to obtain 6-8K in monthly passive income. I am planning to use a 7 year ARM and seller financing. I plan to pay off the seller financing by using the available cash-flow from the property and refinance into a fixed 15 or 30yr. What are your thoughts? What are some possible exit strategies that can be utilized? Is this process obtainable with the high leverage?