Again, ask your bidding contractors.3)The roofing decking should be thoroughly inspected from the inside (attic, etc) and outside (look for dips, bows, water damaged areas) for areas of the roof that may be wood rot.

You can't assess damage fully and you might have a mess getting them out. 

Once you have done that things will smell better unless there are fixtures that have been damaged too (cabinets), so be on the lookout.

There's a home located on my block with frozen pipes and radiator damage that I'd like to buy.

Here is a quick list of things to look for when DFD:•Missing Window Blinds•Dead / Overgrown Lawn•Bad Roof•Lots of Trash and Cars with Filthy Windows–No License Plates, Flat Tires•Broken Windows•Lots of Deferred Maintenance / General Disrepair•Peeling Paint•Overgrown Trees–Lots of Tree Litter on Roof•Fire Damage•Graffiti•Owner Board Up•Notices Posted on Doors / in Windows•Uncollected Mail / Newspapers / Phone Books in Driveway/Mailbox•General AbandonmentWrite down the address & take notes, go home and research owner info/mailing address using local title company, send letter.

I Want control on who is living there and the metrics I use to screen them but the best return on my investment and reduce overturn and damage to property. 

They should obtain a renters' policy that both will cover their personal belongings and give you some protection for unintentional damage they cause as a result of a cooking fire or the like.Hope that helps!

They simply don't have the manpower to deal with issues like property damage.  

@Kahanu Noa The Bank caved...i probably threatened to sue them for damages.

You may end up evicting once the security deposit runs out, and then what's left for damages?