Financing a multi family as residence

[Luke Harris]

There is deal nearby that I would love to have but it seems the financing is going to be difficult.  The property has six units on it, one which is currently used as the residence for the owner. The property is listed at 689,000. I currently own two properties, one is residence and the other is a rental. My debt ratio will be way too high to get another loan and I also know I will have to get a commercial loan because of the amount of units. I love the property as an investment and a future home but I feel stuck with the financing. Does anyone have any suggestions or advice? Thanks!