If you don’t care about maximizing loan amount then you could start whenever.

Unfortunately, this can make it unaffordable for some residents living in these parks. 

And a good property manager will take care of day to day, but you will still have work to do.

However, with careful planning and a proactive approach, you can navigate these hurdles successfully.

Quote from @Sean Barnebey: This is an interesting opportunity, and it sounds like you’re approaching it wisely by considering the numbers carefully.

Congrats on orthodontic residency, though I know residency will be time consuming as well. 

Was previously purchased with a Builder to erect a SFR residence on.

Care to share the details?

@Kris TohovitisI wouldn't recommend using your cash to pay off the mortgage on your primary residence since you can likely get a better return on that money by investing it.What's your buying criteria for the multi-family property?

Highlight features and amenities they care about most.