And 2 days later they text and said while they was cleaning the kitchen counter and turned the garbage disposal switched on she got shock.  

Go meet with someone at a local firm with "Lending" or "Mortgage" or "Funding" in the company name (that right there tells you their #1 priority isn't "open another checking account" or "establish an ATM machine location" at an institutional level), that lives and lends in the community they serve.

It is a 3/4 acre lot with utilities ready on site and the site with a little clean up would be ready to build on.

Rentals is slow growth.. once you get established you can then become an "investor" right now work on sales skills and get in a business that creates the largest commissions..

The sloppy ones cleaned up after themselves and so far, no one gave us reason to turn them out and especially, we are not ready yet to do so.Our current issue is that we know just a few trusted professionals. 

We spent a month cleaning the place up (this including getting the pool cleaned, replacing everything in both bathrooms, redoing the kitchen, painting and generally just making it liveable. 

So, you're into predatory fraudulent dealing going this route with a residential tenant.States have also established equity limits, you hit 10% and you may have to foreclose, not just evict a tenant!      

Yes keeping your units clean and updated( particularly kitchens and baths) will help you collect the higher side of your market rates...but realistically these updates should be ongoing and not a prime rent increasing tool.

The annual inspections are good I think, as it gets the tenant cleaning up and keeping things proper in the unit.

If the house cash flows, and once you establish stable rental income it should not be an issue.