Long term rentals are tough to cash flow unless I implement a co-living / rent-by-the-room strategy, which I've done before, but I'd prefer to not do again. 

This is a local protection implemented at the City and County level.

We are starting to implement more VAs into our accounting and property management parts of the business.

What strategies can I implement to maximize rental income from my first property, which I intended to convert into two units ( Unit 1:Main house, Unit 2: Basement sun room) but cannot due to zoning restrictions? 

@Unal Baris KancogluTo manage a multi-family property, communicate rent adjustments early, implement gradual increases, set limits, reassess lease terms, highlight improvements, and offer incentives.

While the courts will stipulate that you charge no more than 10 percent per month, the general advice is to use caution and charge only five percent.The laws about payment of late fees also stipulate when you can implement these fees.

If you are able to implement on your own, you can get all you need for free for sure.

Due to rates and overall market conditions, it isn't easy to source a deal that cash flows unless you implement a creative strategy or put more than 20% down.

Not sure what the % are, but I personally know plenty of people who have implemented the plans and worked them and so far been what I would consider successful.One thing I think you also have to consider is what resources and time you have to invest. 

House hacking will be a risk-averse investment strategy compared to implementing the BRRRR method.