Her advice, candor, helpfulness, and willingness to do what it took to secure me the best possible outcome was incredible.

If you have handled everything correctly, being strong when needed to be, and doing evictions when needed, the Tenant will feel secure because the Tenant will know what is expected of them and will feel comfortable and will want to stay.

That said, I'd like to raise the rent by $25-$50 per month and put them on a 12 month lease with the condition that if they found their home, they can move out once we find a replacement tenant (and we would focus on securing a new tenant ASAP).  

Don’t allow tenants to move into the property unless they have rent and security deposits PAID IN FULL!!

My Property manager and one of my tenant had some sour relationship and the tenant complained Dept of public work now I got notice from them See attached imageNow my question is How can I do self evaluation on  my own to counter their charges.If these charges are valid, can I give 30 day notice to tenant to move out (Tenant is on month to month lease) so I can fix the issue, this tenant has also complained few times in past too.Any do and don't in such case

You should talk about to your tax man and come up with a % that your going to consider personal vs rental property as I’m sure you know this is very important come tax time.Be sure and remember your security deposits as well, you don’t want to mix that money up either.

So, I borrowed $15k from my roommate for earnest money to secure the property, advanced another $15k or so from my credit cards to cover points and closing costs, and advanced another $20k buffer (using 0% interest promotions on the cards -- I also had perfect credit), and bought it and celebrated.I had a contractor lined up that was a referral by my realtor, who had sold me my own home.

With what you describe, it doesn't sound like your wife is completely against mortgages and debt, it just sounds like that paid off property is and asset in your family's financial 'toolbelt' so to speak that she takes a sense of security in knowing is paid for. 

Securing a ton of debt is great while everything is great, but a bank can call your loans due if they get spooked.

If its a sheriffs sale property going up for public auction at the county courthouse then you will need to do a lot of research and I wouldnt suggest that route until you are well informed and prepared.