They look forward to a long term rental relationship but  the benefits of selecting spring/summer allows the resident the best weather to move and the fullest stock of homes to select from in the future years to come.  

I'd love to put myself in a position to benefit all parties, and if you can facilitate that I would very grateful.  

And you get the benefit of having over 100 past ones to catch up on.Locate and attend 3 different local REIA club meetings great place to meet people gather resources and info.

More tenants to deal with, more items to break/repair in the quad then the duplex.So for me to choose the quad I would desire it to have close to twice the benefit of the duplex (i.e. twice as much cash flow and/or twice as much equity gain). 

I know there are multiple benefits of having a well seasoned real estate agent that works with other investors.

Tthere are other benefits like amortization and taxes.I'm actively looking, but I haven't lucky enough to find properties with positive or considerable cash flow.  

But the thing is she has been good up until now so I want to give her the benefit of the doubt and assume the original contract was a mistake.

Having a smaller return on a SFR is typical as there are some more benefits like an exit strategy.

@Derrick Powell  Keep in mind if you sub meter and pass the water bill on to your tenants vs you paying them now; you have essentially raised your rent wit no benefit to the tenant.

And you get the benefit of having over 100 past ones to catch up on.Locate and attend 3 different local REIA club meetings great place to meet people gather resources and info.