2 Story or 3 story with a MIL duplex

[Garen T.]

I currently own a small footprint lot that is zoned for a duplex. I'm getting various bids and getting ready to break ground in the next few months. These are going to be designed for rentals, but I will eventually sell in about 7 years. 

I'm leaning 2 directions on the design. I'm looking at one of the following 2 options.

1. Garage, kitchen, dining, living area on the 1st floor with 3 bedrooms and laundry on the 2nd floor. 

2. Garage and a small apt on the ground floor. 2nd floor is kitchen, living, dining. 3rd floor is 3 bedrooms. 

The cost to build each model is not significantly different.

My dilemma is trying to figure out where the demand would be greatest for rental (while I own) and then for resell in a few years.

I think the market for those wanting a 3 story is limited, but having the extra bedroom and a ground floor MIL unit makes me think someone would be more than happy to climb the 2 flights to the bedrooms. 

What does the wisdom of the group advise?

Thanks