For my units, I usually look for someone with annual income 40x the monthly rent so I know they are financially secure. 

The fee for this is negotiable, but you can usually estimate about 1 month's rent for this service. 

Usually, they just bring tortillas and eat for lunch. 

When an investor starts out, they are so focused on that first (couple of) deal(s) and are usually either not seeing (lack of experience) or not wanting to see (emotion) any problems in the deal. 

I am ok and usually do leave some of my money in a refi.

Weekends for a lot of people are usually tied up with kids sports, family functions and trips.

Can usually allot 5-10% vacancy factor and same for maintenance.Class B usually also okay, but needs more attention from owner and/or PMC.

Kishora -- Anytime we've had holdups in permits I email (generally, they're very responsive), and I tend to take the "I'm trying to get insight into the objection item, and how can we help" tone, and usually, I find a willing partner on the other end of the phone.  10-12 weeks is a while, usually, its running 4-6 weeks for the last few builds we've done. 

The credit committee is usually made up of local people who are familiar with the market they are in.

If a person wants a different outcome, they usually do something different.