Prior to this, he had told me that he was going to be late on rent due to something else, well, he finally paid the full rent and late fee on July 12th, but I am not sure what should I do next.

And I think Arizona made it illegal last year.

A great contractor who knows the area may also have the answer to this as well.

I know I can acquire them, get them running well, and SBA 504 refinance them in 3 years.

Last year I bought my first single family rental (B- neighborhood) after about 5 years of listening to BP podcasts and it has been doing great.  

You can probably get in two at a time and still have a safe amount of capital at 500k.But if you're saying that use cash and sink every last dollar you have into a single project, I'd say no, do not do that. 

I’ve been renovating and building homes for the last 12 years. 

Only problem I’m having is i wouldn’t own the land it’s in a mobile home park but there are other mobile homes for rent in there as well.

Pros could be: Clean water + tub for each guest; on a well, so no water waste concern; can make it design-y + cute; can be used winter (hot water) + summer (cool water); goes better with forest location of the home than a traditional hot tub might; will hold same number of guests as hot tub would (2 people in each tub).In researching I have seen some people on Airbnb have these checked in amenities as 'hot tub', some 'private hot tub'.

I said yes . at some point they moved the hose to the sump pump,  and last week I found out.