I am trusting my agent's judgement on this...I hope we don't have to evict as I really don't want to ruin the tenants ability to qualify for Section 8 and of course incur the expenses.

The upstairs bathroom has a leak at the tub drain - a slow but steady drip - the ceiling is ruined and it appears that mold is growing now. 

That's weird.Sometimes it's because they are still financially supporting their 35+ year old "adult" children ...Who doesn't dare work because it will ruin there chances to also get on SSDI! 

Hiring of this PM occurred because when the tenant became a problem I had just brought my sister, with terminal cancer, to my home to care for her.  

I am trying to evict him because I don't want bad thing happen like fall from stairs or even he die at property (because he got cancer)My questions are:Is the eviction right thing to do?

Having it in writing will likely save you from a lot of in person sob stories about how their credit was ruined or similar situations.

Vacany and poor tenants ruin your returns not to mention potential damages to the unit. 

Then I would call the parents with your concerns(sob sob) about not wanting to ruin their kids credit at 22 but you need to get paid or take action. 

Only 2 of the three bedrooms went relatively untouched.When I walked through the place 19 months later, the laminate floors have burn marks; the bathroom door has holes in it; one of the bedroom doors was ripped from the door casing; the kitchen counter is ruined; the new appliances are ruined; doors on the kitchen cabinets are ripped off.  

That stuff stinks and it ruins a house.