Given your limited cash and high DTI, refinancing after boosting rents might balance risk and reward best.

Full background checks.IDs, names of all people to occupy house.All move in money received, no personal checkslease signed by All.Walk through inspection completed and signed.

Currently I manage personal rental property here in Canada.

Risks and rewards to this type of tenant? 

Perhaps....but   the person relocating to any given market and who has to make a purchase in a finite period of time is generally the least likely candidate to get a great deal on the purchase, meaning the appreciation is even more important. 

That's the way I look at things personally. 

On the other hand, this phrase is often used by the likes of Uncle G (who, having an accounting degree, should really know better) to suggest claiming personal expenses as business deductions.

It's like asking someone what you should look for in a wife.You need to focus on what your goals are first, then take a personal inventory of your own knowledge, skills, interests, finances, available time, etc. 

It is often used by the likes of Uncle G (who, having an accounting degree himself, should know better) to suggest claiming personal expenses as business deductions.

Personally, all of my units are full and have stayed full, no one is even late with rent much less behind, and no one is moving.