I think your first hurdle is how many units do you have there? 

The main hurdles are having the sufficient capacity with utilities (water, sewer, electric) off-street parking, appropriate setbacks, and fire mitigation (if you have 3 units you are likely going to be required to have one of them sprinkled). 

However once those hurdles are finished it might now be to troublesome to keep the the duplex here.

I've found it's difficult to find multis that meet your description, but for SFH, it's not unreasonable to get in the neighborhood of the 1-1.3% rule.

Thanks so much for the insight, and looking more for the long term with apartment complexes in the near future and I am doing research on property taxes to see what to expect to overcome any hurdles. 

$100 is not an unreasonable rent increase if you have been under charging or if market rents have increased.

I guess my biggest hurdle in factoring this out is the fact that i already has purchased the property and have a mortgage. i think i have all my numbers that i need but its just calculating the ROI.

Borrower shall occupy, establish, and use the Property as Borrower’s principal residence within 60 days after the execution of this Security Instrument and shall continue to occupy the Property as Borrower’s principal residence for at least one year after the date of occupancy, unless Lender otherwise agrees in writing, which consent shall not be unreasonably withheld, or unless extenuating circumstances exist which are beyond Borrower’s control.Is this just boilerplate?

Raising capital is the biggest hurdle for most people, when it comes to scaling. 

Because you are licensed, wholesaling comes with many more hurdles to watch out for, including ones at your own brokerage if you plan on doing wholesale deals where you get paid directly, outside of the brokerage.