It all depends, this is why I always review potential client's books what is the best course of action.I personally do not like QBO for real estate (I make it clear in all my posts lol) I just renewed my certification just because most people can't afford the PM software with accounting such as AppFolio and Yardi.

@Tony Nuttall personally I’m not excited about a 2/1 because there are fewer exit strategies.

My family and I are completely on board for an owner occupied/house hack option, however I see this could be challenging, being the landlord downstairs or next door with 3 screaming children; banging on walls and the likes as most children do.

I would be more concerned with where the title to mobile home was - was it retire and put on the property or is it still personal propertyThere is nothing you can do to make it compliant, if the loan has been current for 12 months then you have ability to repay because they have consistent pay history

Finding the right brokerage is the other challenge you will have because the industry has changed.

The person on title/name of the person on the mortgage can typically win if it is not done right. 

These sellers typically want a fast sale to move on with their lives and avoid ongoing conflicts.Relocating SellersPeople who need to relocate for a new job, military deployment, or other personal reasons often seek a quick sale to avoid the burden of managing a long-distance property.Inherited PropertiesHeirs who inherit a property they don't want to maintain or manage may be eager to sell quickly.

Quote from @Chris Seveney: Personally if you have one mortgage already that is negative cashflow I would be hesitant to buy rright now, especially in canada where from reports their housing situation for pricing is far worse than the US on affordability and just like US, people think prices can only go in one direction but reality is they are moving in the opposite direction."

Challenges?

Yes a new person's experience could absolutely be different.