He put in jumpers instead of fixing the problem, so I then had to pay someone else, that I COULD CONTROL, to come and fix the system legally...so it could pass inspection and not start a fire.Now I am very firm that I am the one paying for the work and if I do not agree to the work I do not pay and no one speaks for me. 

If it  works for banks for approval why shouldn’t we follow a similar system.

Then, you should ask about the major mechanical systems (roof, plumbing, electrical, HVAC, foundation, etc.), you should research the market and neighborhood,ask for sale comps, and then you need to underwrite the deal.I'm happy to help you with the analysis but I would need more information than what you provided.

Once you find someone you trust with teams, systems and processes in place I would want to start with a partial investment in a deal as a test run.

I do have systems in place.

We currently use a very outdated Yardi system.

It is now wrapped up in the septic system.

What software or systems should I invest into that will help me getting more leads and also help better manage the leads I have?

I would also have a system for vetting contractors and never stop looking for new ones.

This is particularly problematic in that the tech guys think (1) they can create a scoring system to evaluate deal quality and or (2) that they can hire relatively new finance/real estate people to further evaluate the deal flow.